Takeaway
In short, this case holds that a sale may be rescinded for mutual mistake when both parties mistakenly treat an altered collectible as authentic, unless they knowingly contracted to allocate that authenticity risk to one side.
Beachcomber Coins, a retail coin dealer, paid Boskett, a part-time coin dealer, $500 for a dime represented by both sides as a 1916 Denver-minted coin. A genuine 1916-D dime is rare and worth far more than its face value. Beachcomber's principal examined the coin for 15 to 45 minutes before buying it. After later receiving a $700 offer conditioned on authentication, Beachcomber submitted the coin to the American Numismatic Society, which determined that the “D” mint mark had been counterfeited.
Beachcomber tendered the coin back and sought rescission based on mutual mistake. Boskett did not dispute that the mint mark was counterfeit, although he contested at trial whether the returned coin was the same one sold; the trial court implicitly found that it was. The bench trial court nevertheless entered judgment for Boskett, reasoning that customary coin-dealing practice required a purchasing dealer to investigate authenticity and assume the risk of an inadequate investigation.
Issue #1
Whether Beachcomber could rescind the sale because both parties mistakenly believed the dime was a genuine 1916 Denver-minted coin.
Holding
Yes. The shared but false belief that the coin was genuine was a mutual mistake of material fact that made the contract voidable by Beachcomber.
Reasoning
The genuineness of the Denver mint mark was a basic assumption underlying the transaction, not a peripheral detail. Both parties believed the coin was a genuine 1916-D dime, and the $500 price directly reflected that belief. A genuine coin's rarity gave it a market value vastly greater than an ordinary dime or an altered coin.
The court treated the case as a classic application of the mutual-mistake rule: when both parties contract under the same mistaken assumption about a fact central to their bargain, the adversely affected party may avoid the contract if enforcement would be materially more onerous than it would have been had the fact been true. The Restatement's example of a purported sterling-silver bar containing substantial base metal illustrated the same principle.
Rescission was practical because the parties could be returned to their precontract positions: Beachcomber could return the counterfeit coin and Boskett could return the $500. Unlike a case in which restoration of the status quo is impossible, nothing prevented equitable relief here.
Issue #2
Whether Beachcomber's inspection of the coin, and any negligence in failing to discover the counterfeit mint mark, barred rescission.
Holding
No. A negligent failure to discover a fact about which both parties were mistaken does not, by itself, preclude rescission.
Reasoning
Beachcomber's principal closely inspected the coin before purchase, but the court held that even an implied finding that this inspection was negligent would not defeat relief. Under the governing mutual-mistake rule, a party's failure to know or discover the shared mistaken fact does not itself bar rescission or reformation.
The relevant distinction was between negligence in detecting an unknown defect and a contractual allocation of the risk of that defect. The record showed the former at most; it did not show that Beachcomber agreed to bear the risk that the coin's Denver designation was counterfeit.
Issue #3
Whether Beachcomber assumed the risk that the coin was not genuine simply because it bought the coin after examining it.
Holding
No. A party assumes the risk of a mistaken fact only when the parties recognize the uncertainty and bargain in light of that known risk; these parties were both certain the coin was genuine.
Reasoning
A buyer may assume the risk of uncertainty about value or authenticity when the parties know that a pertinent fact is doubtful and nevertheless contract on that basis. In that setting, disappointment about the fact's existence is part of the bargain rather than a ground for avoidance.
Here, however, neither party treated authenticity as uncertain. Beachcomber's principal believed the coin genuine after inspection, and Boskett testified consistently with that belief; indeed, he would not have paid nearly $450 to acquire the coin otherwise. Because both parties shared certainty rather than bargained around doubt, there was no assumed risk.
The court noted that the analysis might differ if Boskett had been uncertain about authenticity or value and had deliberately relied on the expert buyer's judgment. But those were not the facts of this sale.
Issue #4
Whether alleged coin-industry custom made the sale an “as is” transaction and required Beachcomber to bear the loss.
Holding
No. The evidence did not establish a binding usage of trade, and it did not show that these parties incorporated an “as is” allocation of risk into their agreement.
Reasoning
The trial court relied on testimony that a dealer purchasing a rare coin would inspect it with magnification and normally submit it to the American Numismatic Certification Service for certification. The Appellate Division held that this isolated description of procedure did not establish a trade usage observed with sufficient regularity to justify an expectation that it governed this transaction under the Uniform Commercial Code.
A trade usage can affect a contract only when it is prevalent enough to support the conclusion that the parties contracted with reference to it. The testimony supplied no basis to find either that such a practice met the Code's definition of trade usage or that Beachcomber and Boskett actually accepted it as making their sale “as is.”
The same witness also testified that coin dealers generally follow a policy of allowing returns for altered coins, which undercut the trial court's conclusion that ordinary industry practice placed the loss solely on the buyer. In addition, Beachcomber received no advance notice that alleged trade usage would be used as a basis for decision, despite the Code's notice requirement for trade-usage evidence.