CYNTHIA HOLCOMB HALL, Circuit Judge:
Louis Luk, following the entry of a conditional plea of guilty, appeals the district court’s denial of his motion to suppress evidence obtained from a search of his home. Luk argues that the search warrant was issued in violation of Rule 41(a) of the Federal Rules of Criminal Procedure and that the warrant was so overbroad as to preclude a good faith, objectively reasonable belief in its validity. We affirm.
I
Louis Luk was one of four persons indicted for conspiracy, illegally exporting high technology computer components to Hong Kong and the People’s Republic of China, and making false statements to United States government agents, under 18 U.S.C. § 371, 50 U.S.C. App. § 2410(a), and 18 U.S.C. § 1001, respectively. The indictment followed a lengthy investigation of Luk and his business, Mcall Resources, Inc., by Doris Koplik, an agent of the United States Department of Commerce, Office of Export Enforcement (“OEE”). Throughout the investigation, Koplik was in communication with Assistant United States Attorney Henry Rossbacher.
After Koplik ascertained that Mcall Resources operated out of Luk’s home in Irvine, California, she sought a search warrant. With Rossbacher’s assistance, she prepared a draft affidavit. The affidavit was typed partially in her office and partially in his. The warrant itself was prepared by Rossbacher in his office. On the day the warrant was issued, October 22, 1984, Rossbacher’s office1 determined which magistrate was on duty and Ross-bacher directed Koplik to go to that magistrate and present the application for a warrant. There is no evidence to show that Rossbacher or anyone in his office ever spoke directly to the magistrate.2 Koplik complied with Rossbacher’s instructions and the magistrate issued the warrant. The warrant was executed at Luk’s home the following day by a team of agents from the United States Customs Service and the United States Department of Commerce.
[670]*670Luk moved to suppress evidence obtained during the search on the ground that the warrant was unconstitutionally overbroad. He supplemented his original motion with the contention that suppression was required because the search warrant was issued upon the request of an unauthorized person in violation of Rule 41(a) of the Federal Rules of Criminal Procedure.3 The district court denied Luk’s motion. The court found that the warrant was unconstitutionally overbroad,4 but that suppression was unnecessary because the agents who executed the search did so in good faith reliance upon the warrant’s validity.5 The court also held that the requirements of Rule 41(a) were satisfied:
I cannot find based on the evidence available to me that Mr. Rossbacher, the Assistant U.S. Attorney involved, made any request directly by him personally to Magistrate Penne that the warrant issue, but I will find that the warrant was issued upon the request of an attorney for the Government and that, therefore, Rule 41(a) has been satisfied; that the warrant is, therefore, not invalid for failure to qualify under Rule 41(a).
Following the denial of his motion to suppress, Luk entered a conditional guilty plea under Fed.R.Crim.P. 11(a)(2), preserving his right to challenge the district court’s evidentiary rulings. He received a sentence of five years probation and a $50,-000 fine. Luk timely filed this appeal.
II
In reviewing the question whether an unauthorized person requested the search warrant, we are called upon to determine whether the district court properly applied existing law to the established facts of this case. Because the question presented “requires us to consider legal concepts in the mix of fact and law and to exercise judgment about the values that animate legal principles,” we review de novo the district court’s determination that Assistant United States Attorney Rossbacher requested the warrant to search Luk’s home. United States v. McConney, 728 F.2d 1195, 1202 (9th Cir.) (en banc), cert. denied, 469 U.S. 824, 105 S.Ct. 101, 83 L.Ed.2d 46 (1984); see United States v. Johnson, 641 F.2d 652, 656 (9th Cir.1980).
We also review de novo whether the “good faith” exception to the exclusionary rule applies in a particular case. United States v. Hendricks, 743 F.2d 653, 656 (9th Cir.1984), cert. denied, 470 U.S. 1006, 105 S.Ct. 1362, 84 L.Ed.2d 382 (1985).
III
In United States v. Vasser, 648 F.2d 507 (9th Cir.1980), cert. denied, 450 U.S. 928, 101 S.Ct. 1385, 67 L.Ed.2d 360 [671]*671(1981), DEA agents obtained a warrant using a tape-recorded affidavit, a procedure not authorized by Rule 41 which requires that warrants may only be issued upon oral telephonic or written affidavits. Although the Court agreed that the agents’ “novel approach” did not conform with the procedures sanctioned by Rule 41, the Court held that suppression was not required in all cases in which the issuance of a warrant failed to conform to Rule 41. The Court then elaborated the following two-part test for Rule 41 violations:
Only a “fundamental” violation of Rule 41 requires automatic suppression, and a violation is “fundamental” only where it, in effect, renders the search unconstitutional under traditional fourth amendment standards. Violations of Rule 41 which do not arise to constitutional error are classified as “non-fundamental.” “Non-fundamental” noncompliance with Rule 41 requires suppression only where:
‘(1) there was “prejudice” in the sense that the search might not have occurred or would not have been so abrasive if the Rule had been followed, or
(2) there is evidence of intentional and deliberate disregard of a provision in the Rule.’
648 F.2d at 510 (citations omitted).
This fundamental/nonfundamental test existed before United States v. Leon, 468 U.S. 897, 104 S.Ct. 3405, 82 L.Ed.2d 677 (1984), and is a judge-made suppression doctrine for Rule 41 violations similar to the good faith exception to the exclusionary rule. The Vasser court noted that the “policies behind the exclusionary rule are not absolute and must be evaluated realistically and pragmatically on a case-by-case basis.” Id. at 510 n. 2; see, e.g., Leon, 468 U.S. at 906-07, 104 S.Ct. at 3411-12 (exclusionary rule is judge-made, not constitutional, and application of suppression sanction must be evaluated in each case). Because the exclusionary rule tends to exclude evidence of high reliability, the suppression sanction should only be applied when necessary and not in any automatic manner. See, e.g., Oregon v. Elstad, 470 U.S. 298, 354, 105 S.Ct. 1285, 84 L.Ed.2d 222 (1985) (Brennan, J. dissenting) (“the [Leon ] Court held that ... the Fourth Amendment does not per se require suppression of evidence derived from an unconstitutional search_”). Further, the link between suppression and the deterrence of unconstitutional conduct should be closely scrutinized, and when deterrence is attenuated or slight suppression should be disfavored. See Illinois v. Krull, 480 U.S. 340, 107 S.Ct. 1160, 1166, 94 L.Ed.2d 364 (1987). Noting that the DEA agents acted in good faith, we held in Vasser that the Rule 41 violations in question were nonfun-damental violations that did not require suppression. Id. at 511.
This Court affirmed the Vasser test the following year in United States v. Stefanson, 648 F.2d 1231 (1981), rejecting a “rather technical” construction of Rule 41 by a Sixth Circuit decision. Stefanson held that a magistrate’s failure to administer and record an oath for a telephonic search warrant, and other violations of Rule 41, did not require suppression when the errors were nonfundamental and “neither deliberate nor prejudicial.” Id. at 1235.
Luk contends that the fundamental/nonfundamental test should not be applied to violations of Rule 41(a). Alternatively, he argues that this doctrine should be overruled. We reject both contentions. Although neither Vasser nor Stefanson involved violations of Rule 41(a), the fundamental/nonfundamental test is not confined to violations of any particular subsection of Rule 41. Rather, the test is clearly directed to the substantive nature of the violation rather than under which subsection of the Rule it falls.
In United States v. Ritter, 752 F.2d 435 (9th Cir.1985), a state judge issued a telephonic search warrant, violating Rule 41’s directive that only a “federal magistrate” may issue a telephonic warrant. Fed.R. Crim.P. 41(c)(2)(A). The Court stated that “the settled rule in the Ninth Circuit is that a purely technical violation of Rule 41 does not require the suppression of evidence otherwise legally obtained.” 752 F.2d at 441. [672]*672Absent prejudice indicating that “a federal magistrate would have handled the search warrant application differently” or deliberate violation of the Rule by the police officers, the Court concluded that the technical violation of the federal magistrate requirement of Rule 41 was insufficient to call for suppression. See also United States v. Johnson, 660 F.2d 749, 753 (9th Cir.1981) (“Johnson II”) (“the lack of a federal magistrate issuing the warrant” did not require suppression when defendants/appellants did not contend that the “warrant at issue was ‘fundamentally’ infirm,” but confined themselves to attacking the technical violation of Rule 41 and the federal agents involved in Johnson II had discussed and concluded in “good faith” that a federal warrant was not necessary), cert. denied, 455 U.S. 912, 102 S.Ct. 1263, 71 L.Ed.2d 452 (1982).
Several Circuits have either adopted the Ninth Circuit’s fundamental/nonfundamen-tal test for Rule 41 violations or expressed similar views regarding Rule 41 violations. The Fifth Circuit has expressly adopted the test, rejecting prior decisions that had required automatic suppression for Rule 41 violations. See United States v. Comstock, 805 F.2d 1194, 1207 (5th Cir.1986), cert. denied, 481 U.S. 1022, 107 S.Ct. 1908, 95 L.Ed.2d 513 (1987) (overruling United States v. Hanson, 469 F.2d 1375 (5th Cir.1972) and Navarro v. United States, 400 F.2d 315 (5th Cir.1968)). In Comstock, federal agents and state agents conducted a search pursuant to a warrant issued by a state justice of the peace in violation of Rule 41(a)’s requirement that a “federal magistrate or a judge of a state court of record” issue a federal search warrant. Fed.R.Crim.P. 41(a). Applying the fundamental/nonfundamental test, the Fifth Circuit concluded that “[o]ur evaluation of the costs and benefits of suppressing this highly reliable physical evidence leads us to the conclusion that suppression is not warranted.” 805 F.2d at 1210.
The Comstock court found that the application of the fundamental/nonfundamental test followed from Leon’s directive to adopt a “balancing approach” and to evaluate the “costs and benefits” of suppression in determining whether the exclusionary rule’s sanction was required in a particular case. Id. at 1207. Moreover, the court noted that “good faith” in the fundamental/nonfundamental test did not require, as Leon did in the context of Fourth Amendment violations, “objective reasonableness”; the court instead found a “less stri-gent standard” appropriate when deterrence of “unconstitutional conduct” was not involved. Id. See also United States v. Carra, 604 F.2d 1271 (10th Cir.), cert. denied, 444 U.S. 994, 100 S.Ct. 529, 62 L.Ed.2d 425 (1979) (no suppression when unauthorized person applies for warrant but warrant was “processed under the supervision and at the instance of a federal officer,” thus satisfying the Rule 41 federal officer requestor requirement; “hyper-technical approach” to warrants rejected); United States v. Loyd, 721 F.2d 331, 333 (11th Cir.1983) (expressly adopting Ninth Circuit test); United States v. Burke, 517 F.2d 377, 381-85 (2d Cir.1975) (warrant improperly issued to, and executed by, a state officer not authorized under Rule 41; held not prejudicial or in deliberate disregard of Rule).
These cases indicate that the issuance of warrants that are “unauthorized” is subject to the test. No automatic exclusionary rule should be created or applied. Furthermore, warrants issued by unauthorized persons are arguably worse violations of the Rule than the instant violation because they violate the Rule’s purpose of requiring an appropriate federal or state judge or magistrate to review the reasonableness and probable cause basis of a search warrant. In contrast, an application by an unauthorized person may be considered an error on the part of the issuing magistrate —the failure to determine whether the individual applicant before him is authorized to request a warrant — rather than a violation that directly voids the authority and validity of the warrant ab initio. See, e.g., United States v. Alvarez, 810 F.2d 879, 883 (9th Cir.1987) (primary function of warrants is to “interpose a neutral and detached magistrate between law enforcement officials and targets of searches and [673]*673seizures before a search or seizure has occurred”); cf. Burke, 517 F.2d at 381-82 (warrant improperly issued to, and executed by, unauthorized state rather than federal official).
IV
The record does not show either that the actual request for the warrant came from Assistant United States Attorney Ross-bacher or that Rossbacher asked the magistrate to issue the warrant to Agent Kop-lik. Consequently, we find a technical violation of Rule 41(a) in this case.
This violation is not a fundamental one. As defined in Vasser, fundamental violations are in effect constitutional violations of the Fourth Amendment. 648 F.2d at 510. The violation here, however, is clearly not a constitutional violation — an unauthorized person who, as the district court held, clearly believed in good faith that the application procedure for the warrant was proper, prepared the affidavit, and submitted the warrant application under the supervision and upon the instruction of Assistant United States Attorney Rossbacher. This violation does not appear on its face to be more fundamental than the issuance of a warrant by an unauthorized judge, which has been held nonfundamental. See, e.g., Ritter, 752 F.2d 435; Johnson II, 660 F.2d 749; Comstock, 805 F.2d 1194. See also United States v. Radlick, 581 F.2d 225 (9th Cir.1978) (warrant issued by state municipal judge not under federal authority is basis for suppression only when prejudice results or deliberate disregard of Rule exists). But see United States v. Burke, 517 F.2d 377, 386 (2d Cir.1975) (citing Navarro, the Fifth Circuit case overruled in Com-stock, and stating that warrants issued by unauthorized judges “made what was done in effect an unconstitutional warrantless search”).
Nor is this violation a nonfundamental one that requires suppression. Under the fundamental/nonfundamental test, a suppression-required nonfundamental violation is one which either results in prejudice “in the sense that the search might not have occurred or would not have been so abra- or was the result of “intentional and deliberate disregard of the Rule.” Stefanson, 648 F.2d at 1235. In other words, suppression is required for nonfundamental violations in “bad faith” or resulting in prejudice.
These suppression-required “nonfunda-mental” violations are logically coextensive with “fundamental” violations of Rule 41. There is very little case law on the substantive content of the fundamental/nonfunda-mental test other than the Vasser and Ste-fanson articulations of the test. In Burke, the Second Circuit noted that “the proper test to be applied is whether a particular Rule 41 standard is one designed to assure reasonableness on the part of federal officers, or whether the provision merely blueprints the procedure for issuance of federal warrants.” 517 F.2d at 384 (Friendly, J.) (quoting United States v. Sellers, 483 F.2d 37 (5th Cir.1973), cert. denied, 417 U.S. 908, 94 S.Ct. 2604, 41 L.Ed.2d 212 (1974)). Our decision in Alvarez, 810 F.2d 879, is instructive. Alvarez involved a warrant-less arrest in a non-public place — a presumptively unreasonable violation of the Fourth Amendment. Id. at 881. The government offered no evidence for its failure to seek a telephonic warrant, as authorized under Rule 41(c)(2), and attempted unsuccessfully to invoke the exigent circumstances exception to the warrant requirement. This court applied the suppression sanction, concluding in part that “there has not been the slightest effort to comply with a clear, concise rule such as Rule 41(c)(2).... The actions of the agents and the Assistant United States Attorney in ignoring the telephone warrant procedure totally frustrates the accommodation [of law enforcement with constitutional rights] approved by Congress.” Id. at 884. Alvarez is a paradigmatic example of a “fundamental” violation of Rule 41. Moreover, the Alvarez decision’s language regarding deliberate disregard of the Rule supports the substantive connection between suppression-required nonfundamen-tal and fundamental violations.
Applying this analysis to the instant case, the nonfundamental Rule 41 violation [674]*674in question is not equivalent to a fundamental violation because it neither prejudiced Luk nor resulted from deliberate disregard or bad faith on the part of Agent Koplik or Assistant United States Attorney Rossbacher. The Rule 41 violation here did not prejudice Luk; the violation did not itself result in an “an unconstitutional war-rantless search.” United States v. Gatewood, 786 F.2d 821, 824 (8th Cir.1986); see Alvarez, 810 F.2d 879. There is no reason to believe that the federal magistrate who reviewed the affidavit and warrant application presented by Agent Koplik would have proceeded differently or not authorized the search warrant if Rossbacher had himself called directly to “request” the warrant or requested it in person. See United States v. Johnson, 641 F.2d 652 (9th Cir.1980) (“Johnson I”) (initial phone call to magistrate by Assistant United States Attorney to request warrant sufficient to satisfy Rule 41(a) request requirement, though unauthorized state officer presented the warrant application and oral affidavit to magistrate). If Rossbacher had directly telephoned the magistrate, this would have brought the instant case within Johnson I to satisfy the Rule 41 request requirement. And, without doubt, an in-person appearance by Rossbacher, even limited to a “Mr. Magistrate, here is Agent Koplik who investigated this case and will present her affidavit,” would have satisfied Rule 41.
Moreover, a direct request by Rossbacher instead of by Agent Koplik would not have diminished the “abrasiveness” of the search. Johnson II, 660 F.2d at 753. The warrant’s overbreadth defect, a failure to specify dates and particular transactions for the business records sought in the search, was not the result of Rossbacher’s failure to request the warrant in person or otherwise. The district court found that the warrant itself was prepared by Ross-bacher and Agent Koplik’s affidavit was prepared and supervised in part by Ross-bacher. Thus, the failure to correct the particularity problem, realistically viewed, was an error on the part of the federal magistrate who reviewed the application and issued the warrant.
Nor was there any indication of “bad faith” or “deliberate disregard” of Rule 41 by Koplik or Rossbacher. The district court specifically found that Koplik acted in good faith in relying on Rossbacher’s instruction to present the warrant application and Luk does not challenge this finding. It is important to note that, unlike many Rule 41 violation cases, see, e.g., Ste-fanson, 648 F.2d 1231, Ritter, 752 F.2d 435, this warrant application was not an urgent or middle-of-the-night telephonic search warrant application: Koplik had worked on the case for 10 months before the actual application, including two and one-half months of drafting the affidavit, and Koplik had contacted Rossbacher one week after her initial assignment to the case and had twenty to twenty-five meetings with him over the next ten months regarding various aspects of the Luk investigation, including the editing and drafting of the warrant affidavit. This was a careful investigation by Agent Koplik and Rossbacher. When Rossbacher directed Koplik to apply for the warrant, Koplik and Rossbacher must have thought their application satisfied the Rule 41 request requirement. Unlike the behavior of the agents and the Assistant United States Attorney in Alvarez, the behavior of Koplik and Rossbacher here suggests absolutely no attempt to avoid compliance with any of Rule 41’s requirements, nor to avoid the most fundamental policy of the Rule — the strong preference for a search warrant itself.
V
Even if the instant Rule 41 violation were initially determined to be either a fundamental or a suppression-required non-fundamental violation, then the suppression sanction is still not required under Leon. Luk contends that the Leon exception is inapplicable in the case of a warrant obtained wholly without authority, and cites United States v. Whiting, 781 F.2d 692 (9th Cir.1986). Whiting is inapposite, however. That case was treated by the Court and by the parties on appeal as a “warrantless search.” Id. at 695. Whiting did not involve a Rule 41 violation, but [675]*675rather the OEE’s authority under export regulations to conduct a warrantless search. 781 F.2d at 698. The Whiting decision simply decided very different issues: (1) that the OEE had no authority to conduct warrantless border searches and (2) that no reasonable reliance under Leon could exist on the OEE’s export regulations as authorization to conduct any warrant-less search. Id. The precise question here, however, is whether the warrant issued was invalid because it was not issued upon the request of an authorized person. This is not a warrantless search case.
The Whiting opinion also states that Leon only applies “to warrants invalidated for lack of probable cause and does not create the broad ‘good faith’ exception the government suggests.” Id. at 698. This statement is misleading unless read in context which makes it quite clear that what the court had in mind was, as it said, that “[t]he Leon rule should ... not be applied to invalid warrantless searches.” This reading is consistent with the companion case to Leon, Massachusetts v. Sheppard, 468 U.S. 981, 104 S.Ct. 3424, 82 L.Ed.2d 737 (1984), which applied the good faith exception to a warrant involving a “clerical error” by the issuing judge that resulted in a violation of the particularity requirement of the Fourth Amendment. 468 U.S. at 986-98, 104 S.Ct. at 3426-27; see United States v. Michaelian, 803 F.2d 1042, 1046 (9th Cir.1986). In Michaelian, the Ninth Circuit rejected an argument that Leon was “inapplicable to situations where the officer obtaining the warrant, not the magistrate, causes the defect in the warrant.” Id. at 1047. This court interpreted the Leon inquiry as one which “focuse[s] exclusively upon the issue of whether there was an objective reasonable basis for the mistaken belief of the executing officers that the warrant was valid.” Id. Following Leon’s analysis, the Michaelian court noted that “[i]n the absence of abandonment of the detached and neutral magisterial role, suppression is proper only where the officers were dishonest or reckless in preparing their affidavit, or could not have harbored an objectively reasonable belief in the existence of probable cause due to a facial deficiency in the warrant.” Id.
The Leon decision itself rejects an overly technical view of the validity of search warrants and the application of the exclusionary rule. The Leon decision warned that:
“If exclusion of evidence obtained pursuant to a subsequently invalidated warrant is to have any deterrent effect, therefore, it must alter the behavior of individual law enforcement officer or the policies of their departments.... [We] conclude that suppression of evidence obtained pursuant to a warrant should be ordered only on a case-by-case basis and only in those unusual cases in which exclusion will further the purposes of the exclusionary rule.”
468 U.S. at 918, 104 S.Ct. at 3418.
In Illinois v. Krull, 480 U.S. 340, 107 S.Ct. 1160, 94 L.Ed.2d 364. (1987), the Supreme Court extended the good faith exception to the exclusionary rule to objectively reasonable reliance by an officer on a statute authorizing warrantless administrative searches. Krull stated that the applicability of a good faith exception must be determined by a balancing test of the “likelihood of [future unlawful police conduct] deterrence against the costs of withholding reliable information from the truth-seeking process.” Id. 107 S.Ct. at 1166. The Court noted three factors that determined whether the exclusionary rule should be applied: (1) whether suppression would affect the group conduct that the exclusionary rule was designed to punish, i.e., police misconduct; (2) the source of the error in the particular case and whether any evidence suggested that the source, e.g., issuing magistrates, was “inclined to ignore or subvert the Fourth Amendment,” id. at 1166 (citing Leon, 468 U.S. at 916, 104 S.Ct. at 3417); and (3) the basis for believing the exclusion of evidence will have a significant deterrent effect upon the source of the error. In Krull, the Court applied this analysis to the Illinois legislature as the source of the subsequently invalidated statute, concluding that legislatures in general were neither inclined to enact invalid laws [676]*676nor significantly deterrable since their law enforcement role was far removed from the individual case. Id. 107 S.Ct. at 1167-68.
Krull indicates that a realistic and pragmatic approach to the exclusionary rule is required. Here, the executing agents and Agent Koplik clearly attempted in substance and in procedure to obtain and execute a warrant they believed was valid. The Rule 41 violation here, even if it were a fundamental or a suppression-required non-fundamental violation, falls within the good faith exception. It neither approaches the seriousness of the violation in Alvarez nor is it any more serious than the unauthorized warrants in Ritter, Johnson II, or Comstock in which suppression was denied under the fundamental/nonfundamental test.6
The dissent rejects the district court’s finding of good faith by stating that “Kop-lik must be presumed to have known that she lacked authority to personally request a search warrant.” Dissent slip op. at 5 n. 3. This misses the central issue. Even if Koplik should have known that she had no authority to request the search warrant, it is not clear that she should be presumed to have known that Rossbacher’s directions and his actions did not satisfy the Rule 41 request requirement. Cf. Fed.R.Crim.P. 41 advisory committee’s notes (for oral or telephonic warrants, expressly allowing a witness other than the requestor to supply the facts necessary to satisfy the probable cause requirement). It is Koplik’s reliance on Rossbacher’s instructions, and the federal magistrate’s failure to object to her presentment of the warrant application, that should be the object of the “good faith” inquiry. Cf. Sheppard, 468 U.S. at 989-90, 104 S.Ct. at 3428 (“we refuse to rule that an officer is required to disbelieve a judge who has just advised him, by word and by action, that the warrant he possesses authorizes him to conduct the search he has requested.... ‘[T]he exclusionary rule was adopted to deter unlawful searches by police, not to punish the errors of magistrates and judges.’ ” (citation omitted)). The district court undertook precisely this inquiry and held that Agent Koplik proceeded in good faith. This finding is unchallenged on appeal.7
VI
Because the warrant issued was constitutionally defective for lack of particularity, we next address the issue of whether the search executed by the Customs and OEE agents was objectively reasonable and in good faith under Leon and, therefore, not a basis for suppression.
We initially note the well-settled principle that a warrant’s overbreadth can be cured by an accompanying affidavit that more particularly describes the items to be seized. See, e.g., United States v. Hillyard, 677 F.2d 1336, 1340 (9th Cir.1982). Under the law of our circuit, however, Agent Koplik’s affidavit cannot be construed to cure the warrant’s particularity defect because the affidavit was not expressly incorporated into the warrant by reference. Id.8 Nevertheless, this does not preclude the use of the executing officers’ reliance upon the affidavit as evidence [677]*677of their reasonable reliance on the validity of the warrant or their good faith.
The Supreme Court has emphasized that the exclusionary rule should only be applied on a case-by-case basis, balancing the costs and benefits of suppression. See Illinois v. Krull, 480 U.S. 340, 107 S.Ct. 1160, 1166, 94 L.Ed.2d 364 (1987); Leon, 468 U.S. at 918, 104 S.Ct. at 3418. It would be contrary to this approach to hold that the failure to type the phrase “see attached affidavit” on the face of the warrant precludes the use of the executing officers’ reliance upon the affidavit as evidence of their reasonable reliance on the validity of the warrant or their good faith. Thus, although the affidavit cannot be used to cure the warrant’s overbreadth, the possession of the affidavit when the officers conduct their search, for example, is evidence of good faith under Leon. See United States v. Crozier, 777 F.2d 1376, 1382 (9th Cir.1985).
Under Leon, the good faith exception to the exclusionary rule is inapplicable when the warrant is “so facially overbroad as to preclude reasonable reliance by the executing officers,” United States v. Michaelian, 803 F.2d 1042, 1046 (9th Cir.1986), or when the officers do not act in good faith. United States v. Spilotro, 800 F.2d 959, 968 (9th Cir.1986). The inquiry is case-by-case. “Suppression of evidence obtained pursuant to a warrant should be ordered only on a case-by-case basis and only in those unusual cases in which exclusion will further the purposes of the exclusionary rule.” Leon, 468 U.S. at 918, 104 S.Ct. at 3418.
The twenty-two page affidavit prepared by Agent Koplik with Assistant United States Attorney Rossbacher’s assistance related the results of an extensive investigation. It provided the particularity that the warrant lacked: dates and names of manufacturers that identified the export transactions for which the government had probable cause to believe a violation of law had occurred.9 Therefore, had the agents read the warrant in conjunction with the affidavit, the search would have been limited to items relating to those transactions with respect to which there existed probable cause to seize.
In this case, the affidavit did act as this sort of limit on the search. Agent Bam-mer, who was specifically authorized to execute the warrant, read Agent Koplik’s affidavit prior to the search; at the briefing immediately prior to the warrant’s execution, Koplik apprised Bammer and the two other agents who assisted in the search of the particular items to seize; Koplik was present at the premises and advised the agents concerning what items were properly within the scope of the search; and the agents specifically relied on the affidavit in determining at the scene what items were properly within the scope of the search.10
The absence of any contention that the officers seized any items other than those relating to transactions described in the affidavit indicates that the agents relied on the more particular affidavit. Moreover, it evidences the officers’ good faith. Unlike [678]*678cases in which the executing officers seized evidence to the full extent of an overbroad warrant, see United States v. Fuccillo, 808 F.2d 173, 177-78 (1st Cir.), cert. denied, 107 S.Ct. 2481 (1987), the agents here acted in good faith by limiting their search to items relating to those transactions described in the affidavit with respect to which there existed probable cause to seize. They seized a limited number of documents compared with the quantity of documents found at the premises that would have fallen within the terms of the overbroad warrant.11 This was not a “general, exploratory rummaging in a person’s belongings.” Coolidge v. New Hampshire, 403 U.S. 443, 467, 91 S.Ct. 2022, 2038, 29 L.Ed.2d 564 (1971).
In light of the officers’ reliance on the accompanying affidavit, we hold that the warrant, construed in conjunction with the affidavit, was not “so facially overbroad as to preclude reasonable reliance by the executing officers.” Michaelian, 803 F.2d at 1046; see Massachusetts v. Sheppard, 468 U.S. 981, 990 n. 7, 104 S.Ct. 3424, 3429 n. 7, 82 L.Ed.2d 737 (1984) (“This is not an instance in which ‘it is plainly evident that a magistrate or judge had no business issuing a warrant.’ ” (citation omitted)); United States v. Accardo, 749 F.2d 1477, 1481 (11th Cir.) (warrant authorizing search of “all corporate records” not “so facially deficient” as to preclude good faith), cert. denied, 474 U.S. 949, 106 S.Ct. 314, 88 L.Ed.2d 295 (1985).12 The reasonableness of the executing officers’ reliance is buttressed by the expertise of Assistant United States Attorney Rossbacher, who assisted Agent Koplik in drafting the affidavit and who actually prepared the warrant. See Michaelian, 803 F.2d at 1047; United States v. Fama, 758 F.2d 834, 837 (2d Cir.1985). The officers’ reliance on Agent Koplik’s affidavit also supports the district court’s finding that the officers acted in good faith.
VII
The decision of the district court is AFFIRMED.