1818 1818/5 Overdate

Few early federal varieties tell the story of mint thrift quite as plainly as the 1818/5 quarter. When the Philadelphia Mint resumed quarter production in 1818 after a three-year pause, at least one obverse die that had been prepared but unused in 1815 was repurposed by re-engraving the final digits. The "5" was not fully effaced before the "8" was punched over it, leaving the original underdigit visible inside the lower loop of the final 8. The 1818/5 shares its combined mintage figure of 361,174 with the standard date, and only a fraction of that total carries the overdate, which is now one of the better-known early American varieties.

Standard Type 1 specifications apply: 27 millimeters, 6.74 grams, and 89.24 percent silver with a reeded edge. The overdate exists across two Browning marriages, B-1 with the sharp underdigit and B-3 where later die lapping has weakened the visible "5." Collectors who want the most obvious diagnostic pursue B-1. The diagnostic is straightforward to teach but requires patience to see clearly. Hold the coin under a 10x loupe and examine the lower loop of the final 8 in the date, slightly toward the rim side. The remains of a 5 sit inside that loop, with the top serif of the 5 visible as a short curve and the lower flag of the 5 protruding faintly from the bottom of the 8. On worn coins, the diagnostic softens, but the position of the underlying serifs almost always survives well enough to authenticate. Counterfeit overdates are uncommon but tooled-in fakes do exist, so confirm under raking light that the underdigit metal is original and not added.

The 1818/5 is treated as a major variety by PCGS and NGC, which assign it its own number and population. Heritage Auctions and Stack's Bowers track it as a separate listing, with strong demand from variety specialists working from the Capped Bust Quarter series history.