Newly Discovered 1831 Quarter Eagle Struck on a Dime Planchet
Filed Under: Unusual Items, Heritage Auction Galleries, New Discoveries, Errors, US Coins
In the earliest years of the Mint, dime and quarter eagle reverse dies were used on each denomination–apparently a conscious decision. The planchet sizes were close, 19 mm for the dimes and 20 mm for the quarter eagles.
The diameter of each denomination was later reduced when new machinery was introduced. The dime’s diameter was reduced to 18.5 mm beginning in 1809, and the quarter eagle to 18.2 mm in 1829.
It is not a stretch to imagine the Mint striking a batch of dimes with a few unstruck planchets remaining in the hopper, then striking a run of quarter eagles, a couple of which were struck on leftover dime planchets. Only 0.3 mm separated the size of the two planchets, an imperceptible difference to the casual inspector.
What happened next is fairly obvious: nothing. This piece entered the channels of commerce and circulated as a dime for many years. Only recently and after 54 points of wear did someone notice that the design was inconsistent with that of an 1831 dime. This piece was found in a bag of silver in North Texas, in May of this year.
It is always interesting to scan the “Found in Rolls” column in Coin World. Foreign coins, tokens, silver coins are constantly found in rolls. But an 1831 quarter eagle struck on a dime planchet in a bag of silver?
This is the second example of this off-metal striking that is known. The other piece is high-grade and has a distinguished pedigree including Brand, Opezzo, Farouk, Judd, and Sloss. It has been off the market since 1974, when it was traded privately, then it was withdrawn from the 1979 ANA Sale. Over the years that piece has been listed and delisted as a possible pattern. (more…)

Dallas, TX:
Dallas, TX. Heritage Auction Galleries has set the record for the most valuable ANA Auction ever! Significant and classic rarities from all series in American numismatics, most of them offered in the Platinum Night catalogs, smashed the previous record of $27.7 million set last year at the Milwaukee ANA event. The auction was held in Baltimore July 30 - Aug. 3, in conjunction with the World’s Fair of Money summer convention of the American Numismatic Association. Total prices realized for the American coins are currently $41,022,713, and will rise further when the post auction buys are finalized.
Two prominent rare coin dealers jointly bid a total of $12,650 (including buyer’s premium) to have lunch with Heritage Auction Galleries Co-Chairman, best-selling author and acclaimed numismatic authority, Jim Halperin. Conducted in conjunction with Heritage’s official auction of the American Numismatic Association World’s Fair of Money® convention in Baltimore on “Platinum Night,” July 31, 2008, all proceeds of the winning bid and commission will be donated to ANA education programs.
Discovered earlier this year, it is the only serial number 1 Black Charter Note from any bank to survive, and is one of only three Original Series Black Charter Notes known to exist (Fr. 399).















