OPINION OF THE COURT
GARTH, Circuit Judge.
This breach of contract action in the context of the radio industry requires us to resolve questions concerning the authority of an employee to bind his principal, the occurrence of an anticipatory breach, and the damages recoverable following such breach. We hold, as did the district court, that the employee had apparent authority to contract on behalf of the radio station and that an anticipatory breach of the contract did occur. However, we reverse the district court’s determination as to the damages resulting from this breach.
I. PROCEDURAL HISTORY AND FACTS
Plaintiff William B. Tanner Company (Tanner) commenced this diversity action against defendant WIOO, Inc. (WIOO) in the United States District Court for the Middle District of Pennsylvania. Tanner is a Tennessee corporation which produces promotional and advertising services for use by radio stations throughout the country. WIOO is a Pennsylvania corporation doing business as a licensed radio station in Carlisle, Pennsylvania.
In its complaint Tanner claimed that it had produced radio jingles and promotions for WIOO under five licensing contracts for which it had not received full [265]*265compensation.1 F. Eugene Waite (Waite), an employee of WIOO, executed each of the contracts allegedly on behalf of the station. Under all but one of these agreements, Tanner was obligated to furnish various promotional materials to WIOO in return for cash payments and a specified number of one-minute spots.2 A “spot” is a segment of radio time sold for advertising purposes. The five contracts purported to grant Tanner a large number of one-minute spots which were to be “valid until used.”
After a trial without a jury, the district court filed an opinion which included the following findings of fact and conclusions of law:
(1) that Tanner had failed to establish by a preponderance of the evidence that Waite possessed actual authority to sign the contracts on behalf of WIOO;
(2) that Tanner established by a preponderance of the evidence that WIOO created in Waite apparent authority to bind the station under the contracts;
(3) that WIOO’s conduct constituted an anticipatory breach of the contracts;
(4) that Tanner unreasonably delayed enforcement of Contracts Nos. 1 and 4 and therefore only Contract No. 5 was before the court;3
(5) that Tanner was entitled to damages of $12,628 on Contract No. 5
measured by the monetary value of 1560 one-minute spots and an outstanding cash obligation of $928.
A judgment filed July 15, 1974 was entered in favor of the plaintiff Tanner in the amount of $12,628 plus interest. Thereafter, WIOO moved to vacate or amend the judgment or for the grant of a new trial. On December 13, 1974, the district court denied WIOO’s motion. This appeal followed. We have jurisdiction under 28 U.S.C. § 1291.
II. CHOICE OF LAW
Since the district court had jurisdiction on the basis of diversity of citizenship, we are bound by the choice of law rules of the forum state, Pennsylvania. Klaxon Co. v. Stentor Electric Mfg. Co., 313 U.S. 487, 61 S.Ct. 1020, 85 L.Ed. 1477 (1941).
All of WIOO’s and Waite’s actions which are relevant to a finding of apparent authority occurred in Pennsylvania. Whether Tanner relied on these actions in Pennsylvania or Tennessee need not concern us because both Pennsylvania and Tennessee adhere to the doctrine of apparent authority as expressed in the Restatements (First and Second) of Agency. Accordingly, we feel free to apply Pennsylvania law in the resolution of this issue.4
[266]*266Furthermore, Pennsylvania is the place of performance under the contracts. Although this point is not free from doubt, we interpret Pennsylvania law as providing that “matters connected with the performance of a contract are governed by the law prevailing at the place of performance.” Musser v. Stauffer, 192 Pa. 398, 43 A. 1018 (1899); Atlas Credit Corp. v. Dolbow, 193 Pa.Super. 649, 165 A.2d 704, 708 (1960). Therefore, we must look to the law of Pennsylvania, as have the parties, to determine the remaining two issues: whether there was an anticipatory breach and whether damages are recoverable.
III. APPARENT AUTHORITY
The district court’s finding that Waite possessed apparent authority to bind WIOO contractually is a mixed question of fact and law. We may not set aside the court’s factual determinations, “unless [they are] clearly erroneous.” Rule 52(a), Fed.R.Civ.P.; see Krasnov v. Dinan, 465 F.2d 1298, 1302 (3d Cir. 1972). However, in determining whether the facts as found by the district court constitute apparent authority under Pennsylvania law, we may exercise an “independent review.” United States ex rel. Hayward v. Johnson, 508 F.2d 322, 325 (3d Cir. 1975).
A. Creation of Apparent Authority
The district court concluded that “. . . the defendant WIOO created in F. Eugene Waite apparent authority to act as general manager of the station. .” WIOO argues here that the district court improperly looked to the actions of Waite rather than to the actions of WIOO in determining the existence of apparent authority.
Under Pennsylvania law, apparent authority flows from the conduct of the principal and not that of the agent. In Revere Press, Inc. v. Blumberg, 431 Pa. 370, 246 A.2d 407, 410 (1968), the Pennsylvania Supreme Court stated:
Apparent authority is power to bind a principal which the principal has not actually granted but which he leads persons with whom his agent deals to believe that he has granted. Persons with whom the agent deals can reasonably believe that the agent has power to bind his principal if, for instance, the principal knowingly permits the agent to exercise such power or if the principal holds the agent out as possessing such power.
See also Jennings v. Pittsburgh Mercantile Co., 414 Pa. 641, 202 A.2d 51, 54 (1964); Reading Co. v. Dredge Delaware Valley, 468 F.2d 1161, 1163 (3d Cir. 1972).
The district court found that Waite held himself out to the public as the general manager of WIOO and that the owners of the station acquiesced in this conduct. Waite identified himself in four of the five contracts as the “general manager.” Moreover, the industry-wide publications of the Standard Rate Data Service (SRDS) from February, 1967 to February, 1971 listed Waite as the general manager of WIOO.
Both owners of WIOO testified that they knew Waite used the title “general manager” and that they did not object.5 Furthermore, the court found that the owners of WIOO signed numerous checks payable to the order of Tanner [267]*267without ever inquiring as to the reason for payment.6
These findings of fact, supported as they are by the testimony, are not “clearly erroneous” and therefore may not be disturbed. Based upon these facts, we conclude, as did the district court, that the owners of WIOO through their actions “knowingly permitted]” Waite to hold himself out to the public as the “general manager” of the station, Revere Press, Inc. v. Blumberg, supra, thereby creating in Waite apparent authority with respect to third parties.
B. Power to Enter Contracts
The district court determined that WIOO created in Waite apparent authority and that “. . .a general manager under like circumstances is empowered to enter into contracts binding the corporation. . . . ” WIOO argues that contracts providing for spots that were “to be valid until used” represented so unusual an agreement as to exceed the scope of whatever apparent authority was created.
Under Pennsylvania law, an agent may bind his principal to third persons where “his acts are within the scope of the authority which the principal has caused or permitted him to possess.” Edwards v. Heralds of Liberty, 263 Pa. 548, 107 A. 324, 325 (1919).
The district court’s finding that a general manager may contractually bind a radio station is supported in the evidence. Mr. E. D. Elmore, credit manager of Tanner, testified on direct examination (rebuttal) as follows:
Q. Are you familiar or not with who normally signs such contracts with the radio station?
A. Yes sir. It would be the general manager — I would say 95 percent of them, at least, are by the general manager.
Tr. 358. This testimony was uncontroverted.7
Elmore also testified concerning the usual nature of these contracts:
Q. Have you ever put out a contract that didn’t mention anything about the time element at all, whether it was for an indefinite period, or is this the sort of thing that is important to you and you always have a stipulation?
A. That is the standard contract. It says, “valid until used” unless by agreement of the parties the contract is changed, and then it is subject to home office approval. . .
Tr. 366-67.
In light of Elmore’s testimony we cannot say the district court was clearly erroneous in its findings. Krasnov v. Dinan, supra. We also agree with the district court that these contracts granting spots for an unlimited time are not so extraordinary as to exceed the authority of a general manager or to constitute reasonable notice to a third party of the inadequacy of the general manager’s power.8
[268]*268C. Reliance
The district court found:
that Tanner entered into five contracts with the ostensible general manager of WIOO; that thereafter Tanner prepared and sent to WIOO highly-personalized radio jingles and introductory tapes stylized with the WIOO logo. Moreover, the contracts all contain a clause which specifically attests that the party signing on behalf of the radio station is authorized to contractually bind the station. By a preponderance of the evidence the plaintiff established that its conduct was in response to a contract entered into by the apparent general manager of WIOO. No further evidence of reliance need to be shown.
WIOO argues that Tanner failed to establish its reliance upon the apparent authority of Waite. Here too, we may independently review the district court’s finding as a mixed question of fact and law.
Pennsylvania law provides that a principal who has invested an agent with apparent authority is bound to “third persons who have relied thereon in good faith.” Edwards v. Heralds of Liberty, supra, 107 A. at 325; Schenker v. Indemnity Ins. Co., 340 Pa. 81, 16 A.2d 304, 306 (1940).9
Each of the five contracts signed by Tanner and Waite contained a statement that the “[s]tation official signing this agreement certifies that he has the authority to make the agreement.” Indeed, as we previously noted, Elmore, credit manager of Tanner, testified that 95% of the contracts entered into with radio stations were signed by “the general manager.” See p. 267 supra. These findings of fact by the district court are not “clearly erroneous.” We agree with the district court that Tanner, in good faith, relied upon the apparent authority of Waite.
Having concluded that WIOO’s actions created apparent authority in Waite as general manager authorizing him to execute contracts such as those here in dispute and that Tanner reasonably relied on such authority, we hold, as did the district court, that WIOO is contractually bound to Tanner under Contract No. 5.
IV. ANTICIPATORY BREACH
The district court concluded that “[t]he record amply supports anticipatory breach by the defendant.” This conclusion was based upon evidence that
[a]mong other things, Harold Swidler, an officer of WIOO, and E. D. Elmore, of Tanner, both established that Swidler had, prior to suit, on February 23, 1971, disavowed all knowledge of the very existence of the contracts (N.T. 93-94). Further Swidler specifically told Elmore that WIOO would not run any of the Tanner spots even if sent (N.T. 93-94). Swidler testified he was unable to recall any reference to spots in their conversation. However, Elmore testified from notes which were made during and immediately after the talk, lending greater credence to his version of the telephone conversation.
WIOO contends that these facts cannot justify the conclusion that an anticipatory breach occurred. The argument proceeds: (1) WIOO’s refusal to perform was made in response to unreasonable, improper demands by Tanner; (2) WIOO did not unequivocally refuse to perform; and (3) the anticipatory breach, if one occurred, was not accepted by Tanner. Since WIOO challenges only the application of the facts to the law, we may exercise an independent review of the district court’s determination.
In discussing the doctrine of anticipatory breach, Pennsylvania requires as an [269]*269element . . an absolute and unequivocal refusal to perform or a distinct and positive statement of inability to do so.” McClelland v. New Amsterdam Casualty Co., 322 Pa. 429, 185 A. 198, 200 (1936), quoted in McCloskey & Co. v. Minweld Steel Co., 220 F.2d 101, 104 (3d Cir. 1955); see 4 A. Corbin, Contracts § 973 (1951). That element is present here.
The district court relied on the testimony of Tanner’s credit manager Elmore who testified from his notes as to the telephone conversation of February 23, 1971 with Harold Swidler. From that telephone conversation the district court among other things found that WIOO “would not run any of the Tanner spots, even if sent.” We will not review credibility findings of the district court, Government of the Virgin Islands v. Gereau, 502 F.2d 914, 921 (3d Cir. 1974); Wilkin v. Sunbeam Corp., 466 F.2d 714, 717 (10th Cir. 1972), and in light of the Elmore testimony, we cannot say that the district court’s findings were clearly erroneous. Krasnov v. Dinan, supra.
Elmore’s testimony did not reveal any unreasonable or improper demands by Tanner as WIOO contends.10 Rather, it indicated complete repudiation of the contract by WIOO.11 Accordingly, we reject WIOO’s first two arguments.
Finally, WIOO argues that the court erred in holding that an anticipatory breach occurred. WIOO claims that Tanner had not “accepted” WIOO’s repudiation of the contract and that absent such acceptance there can be no breach. The district court’s opinion does not discuss this issue. However, because we are in as good a position as the district court to resolve his legal question, we may proceed to do so ourselves. See Universal Athletic Sales Co. v. Salkeld, 511 F.2d 904, 907 (3d Cir. 1975).
WIOO asserts that Pennsylvania law of anticipatory breach requires more than an “absolute and unequivocal refusal to perform.” McClelland v. New Amsterdam Casualty Co., supra 185 A. at 200. It points to McCormick v. Fidelity & Casualty Co., 307 Pa. 434, 161 A. 532, 533 (1932), where the Pennsylvania Supreme Court stated:
Many authorities hold, and so far as we are aware there are none to the contrary, that, whenever the unequivocal act of one of the parties evidences an intent not to fulfill his executory agreement at the time specified in it, the other party may, if he does so promptly and unequivocally, accept such breach and sue at once; but, until he does accept it, the act operates as a tender only. If he does not promptly and unequivocally accept the tender, the contract remains in full force and effect according to its terms, for the benefit of both parties to it.
See Zuck v. McClure & Co., 98 Pa. 541 [270]*270(1881); Barber Milling Co. v. Leichthammer, 273 Pa. 90, 116 A. 677 (1922). Under this doctrine, a “tender” ripens into an anticipatory breach only when the aggrieved party has accepted the tender.
Although the Pennsylvania courts have thus far not expressly rejected the doctrine of acceptance which is urged upon us by WIOO, we are persuaded that acceptance is no longer required by Pennsylvania to give rise to an anticipatory breach.12 While the anticipatory repudiation section of the Uniform Commercial Code adopted by Pennsylvania, 12A P.S. § 2-61013 does not govern our case,14 nevertheless it does represent Pennsylvania’s most recent expression as to the law of anticipatory breach.15 Among other alternatives, Section 2-610(b) gives an aggrieved party the option to
resort to any remedy for breach . . . even though he has •notified the repudiating party that he would await the latter’s performance and has urged the retraction. . . .
12A P.S. § 2-610(b). This negates any requirement that there must be an acceptance of an anticipatory breach.16
Other recognized authority has rejected the acceptance doctrine of anticipatory breach with respect to contracts not embraced within the Uniform Commercial Code as well. Relying primarily on decisions of the United States Court of Appeals in Tri-Bullion Smelting & Development Co. v. Jacobson, 233 F. 646 (2d Cir. 1916) and Bu-Vi-Bar Petroleum Corp. v. Krow, 40 F.2d 488 (10th Cir. 1930), Professor Corbin wrote:
In a number of well-considered recent cases, this doctrine that an anticipatory repudiation is not a breach until it is accepted as such by the injured party has been repudiated. Their reasoning is convincing and they should now be accepted as having established the law. (Footnotes omitted.)
[271]*2714 A. Corbin, Contracts § 981 (1951). The Restatement (Second) of Contracts § 280 (Tent. Draft No. 9, 1974), following Section 320 of the Restatement of Contracts (1932) and Section 2-610 of the Uniform Commercial Code, provides:
The injured party does not change the effect of a repudiation by urging the repudiator to perform in spite of his repudiation or to retract his repudiation.
There is unanimity among the commentators that acceptance is no longer necessary to constitute an anticipatory breach.
Pennsylvania law has rejected the acceptance doctrine for anticipatory breach of contracts which come within the Uniform Commercial Code. 12A P.S. § 2-610(b). We know of no justification or logic for applying a different rule to a contract which is outside the Code. We are persuaded that Pennsylvania courts today, even in a non-Code context, would follow those legal authorities that have rejected the acceptance doctrine. In reaching this conclusion we do no more than recognize a single rule of anticipatory breach governing all contracts, within or without the Uniform Commercial Code.
The record here reveals attempts by Tanner to secure WIOO’s performance under the contracts following the telephone conversation of February 23, 1971.17 Four months after WIOO refused to perform further, Tanner obtained local counsel to commence suit. This action began on March 13, 1972, more than a year following the referenced telephone conversation. Our finding that Pennsylvania no longer requires acceptance of an anticipatory breach leads to the conclusion that Tanner’s efforts to secure performance by WIOO and its delay in filing its complaint are not fatal to its action.
V. Damages
The district court held that WIOO was liable to Tanner under Contract No. 5 for the outstanding cash obligation of $928 and the value of “1560 one-minute spots as of the date of breach.” Thus, the district court entered a judgment in favor of Tanner for $12,628.
WIOO argues that the district court erred in its award of damages with respect to the spots because (1) the amount of damages was not supported by the evidence, (2) the damage calculation failed to pro-rate the number of spots available to Tanner during the remaining life of the contract, and (3) Tanner failed to prove its loss of profits.18 Because we agree with WIOO’s third contention and, therefore, must reverse the district court’s judgment as to damages, we need not address ourselves to the first two arguments.
The question of damages following breach of a contract is one of law that is reviewable by us under the error of law standard. In Pennsylvania
[t]he measure of damages for breach of contract is compensation for the loss sustained. The aggrieved party can recover nothing more than will compensate him. Plaintiffs should be placed as nearly as possible in the same position they would have occupied had there been no breach.
Lambert v. Durallium Products Corp., 364 Pa. 284, 72 A.2d 66, 67 (1950). See also In re Kellett Aircraft Corp., 191 F.2d 231, 236 (3d Cir. 1951); 5 A. Corbin, Contracts, § 1002 (1964). This loss may take the form of additional expenditures or failure to realize expected profit. Hahn v. Andrews, 182 Pa.Super. 338, 126 A.2d 519, 521 (1956).
In each case it is the burden of the party “seeking damages for breach of contract ... to prove such dam[272]*272ages with reasonable certainty.” Wilcox v. Regester, 417 Pa. 475, 207 A.2d 817 (1965). However, Pennsylvania insists that
[tjhere can be no award for breach of contract (except in certain cases an award of nominal damages) when there is no evidence produced by which the jury can measure the damages. Damages cannot be awarded by guess work. The Restatement of the Law of Contracts, sec. 331, lays down the following: “Damages are recoverable for losses caused or for profits and other gains prevented by the breach only to the extent that the evidence affords a sufficient basis for estimating their amount in money with reasonable certainty.” In Rice v. Hill, 315 Pa. 166, 172, 172 A. 289, 291, this court held: “Damages are never presumed; the plaintiff must establish by evidence such facts as will furnish a basis for their assessment, according to some definite and legal rule.”
In re Friese’s Estate, 336 Pa. 241, 9 A.2d 401, 403 (1939); Exton Drive-In, Inc. v. Home Indemnity Co., 436 Pa. 480, 261 A.2d 319, 324 (1969), cert. denied, 400 U.S. 819, 91 S.Ct. 36, 27 L.Ed.2d 46 (1970).
Here, Tanner had the burden of proving with “reasonable certainty” the loss it sustained by WIOO’s refusal to provide the promised spots. To the extent that these spots had value to Tanner, their value was represented by the amount for which they could be sold to national or other advertisers.
However, we find no evidence in the record as to whether Tanner had potential customers for its spots.19 Nor is there evidence in the record as to the price at which such spots could be sold by Tanner even if customers were available.
Although the record reveals the prices at which WIOO offered to sell spots during various time periods, that evidence alone cannot suffice to meet Tanner’s burden of proof. First, the record is barren as to whether WIOO actually sold spots during the relevant contract periods at its published sales prices. Second, and of more importance, the record is completely silent as to whether Tanner could sell spots at the same price listed by WIOO. Although WIOO’s sales price may be relevant in the proof of Tanner’s damages, it does not provide the “hard evidence” required for a calculation of Tanner’s damages with “reasonable certainty”.
Absent such evidence there is no basis other than pure speculation upon which loss of Tanner’s profits can be calculated. Under these circumstances the district court erred in awarding damages to Tanner where no evidence of damages appears in the record.
VI. Conclusion
We hold, as did the district court, that Waite had apparent authority to contractually bind WIOO and that WIOO, by an anticipatory repudiation, breached Contract No. 5 with Tanner. The district court, therefore, properly awarded damages to Tanner for $928, the outstanding cash obligation under Contract No. 5. However, the district court erred in awarding damages for the value of the spots under Contract No. 5 as Tanner failed to prove any loss of profits, let alone a loss with “reasonable certainty”.
Although we affirm WIOO’s liability for breach of Contract No. 5, we are nevertheless obliged to reverse the judgment in favor of Tanner because of a [273]*273failure of proof of damages. Therefore, we will reverse the judgment of the district court and direct that it vacate the judgment in favor of the plaintiff Tanner in the sum of $12,628 plus interest and in its stead enter a judgment in favor of the plaintiff Tanner in the amount of $928 with such interest as may be appropriate. Each party to bear its own costs.
. Chief Judge Seitz, in dissent (pp. 274-275), reasons that the spots could have been donated to a charity, thereby having value to the plaintiff as a tax deduction, or the spots could have been used by the plaintiff itself. However, no evidence supporting or even suggesting either of these two possibilities appears in the record.