A discovery coin has just joined the shortest list in modern American error collecting. Professional Coin Grading Service has authenticated and certified a 2022-D Wilma Mankiller quarter struck on a five cent planchet, grading the piece Mint State 64. First reported by Mike Byers in Mint Error News, the coin is only the second off-metal error known in the entire American Women Quarters series, and one of only two U.S. off-metal errors of any kind known with a date of 2020 or later.
That last point is the real story. A wrong-planchet quarter would have been a good find in any decade. In this one, it borders on the impossible.
A Mistake the Mint Almost Cannot Make
Off-metal errors happen when a planchet intended for one denomination finds its way into the press of another. In this case, a nickel blank, roughly 3.05mm smaller in diameter than a quarter planchet, slipped into a Denver press striking Wilma Mankiller quarters in 2022. The undersized blank sat inside the collar, so the design of both dies landed on a canvas too small to hold it, leaving the outer legends crowded against the edge and the coin visibly dwarfed inside its holder.
For most of the twentieth century, errors like this escaped the Mint with some regularity. Modern production has changed that. According to Byers, no other U.S. off-metal mint errors dated 2020 or newer are known in any collection, auction record, or dealer inventory. Tightened quality control and automated riddling have effectively closed the pipeline that once fed this corner of the hobby. When a piece like this surfaces anyway, it arrives as evidence of just how rarely the system now fails.
The Sally Ride Precedent
The Mankiller quarter has exactly one companion. The first off-metal reported from the American Women Quarters program was a 2022-P Dr. Sally Ride quarter, also struck on a nickel planchet, certified MS 67 by NGC. That coin sold through a GreatCollections auction in 2023 for $10,181, a result that established the market’s appetite for major errors from this series.
The pairing is fitting in its own way. The American Women Quarters program ran from 2022 through 2025, honoring twenty trailblazing figures in civil rights, science, space, government, and the arts, five per year. Of those twenty designs, the only two known to exist as dramatic mint errors honor Wilma Mankiller, the first woman elected Principal Chief of the Cherokee Nation, and Sally Ride, the first American woman in space. Both errors emerged from the program’s very first year, and no third example has surfaced since.
The Laura Gardin Fraser Connection
There is a quieter historical thread running through this coin. Every American Women quarter carries the same obverse: a portrait of George Washington designed by Laura Gardin Fraser in 1932 for the original Washington quarter competition. The Mint passed over her design at the time in favor of John Flanagan’s, and Fraser’s Washington waited nearly seven decades before appearing on the 1999 $5 gold commemorative, then finally reaching the circulating quarter in 2022.
Byers notes a personal connection to that history as well, having discovered and sold Fraser’s original obverse plaster model for the rejected 1932 design. Commentary from CoinWeek makes the broader point: this single coin sits at the intersection of several collecting communities at once, error specialists drawn to the wrong-planchet strike, Washington quarter collectors tracking the series, modern-issue collectors who understand how scarce post-2020 errors are, and collectors of women on U.S. coinage who see the line connecting Mankiller, Ride, and Fraser herself.
What It Means
Certified populations do not get smaller than this. Two coins define the entire off-metal record of a twenty-design, four year national coin program, and this Mankiller quarter is the only example bearing a Denver mintmark. Whether it eventually crosses an auction block or settles quietly into a specialized collection, its significance is already fixed: it is one half of the complete story of what happens, on the rarest of occasions, when the modern Mint gets it wrong.
