1831

The 1831 dime is the first issue struck after Philadelphia abandoned the two-year reverse-size experiment of 1829 and 1830, when engravers had tested different wreath and lettering proportions in search of a workable layout for the smaller planchet introduced in 1828. By 1831 the Mint had settled on a single standardized reverse design, and every die pair used through the remainder of the series follows that pattern. There are no major sub-varieties cataloged for this date, which makes the year a clean reference point for collectors trying to understand how the small-diameter type stabilized. Multiple die marriages exist, identified by John Reich attribution numbers based on star placement, date spacing, and the position of the eagle relative to the wreath, and specialists pursue these marriages with the same focus that bust half collectors apply to Overton numbers. Reported mintage for the year is 771,350 pieces, struck on planchets weighing 2.7 grams in .8924 fine silver, with a reeded edge and an 18.5 millimeter diameter that defines the reduced-size format.

Authentication on an 1831 dime starts with the scale. A genuine planchet weighs 2.7 grams within tight tolerance, and any example more than roughly a tenth of a gram light or heavy should be examined for cast or struck-copy origins. Cast counterfeits, which were a real problem for circulating bust silver in the nineteenth century, show a grainy or pebbled surface texture under magnification because the casting process cannot replicate the smooth flow lines left by a die strike. The reeding on a genuine piece is sharp and evenly spaced; cast fakes often display soft, rounded reeds or visible seams along the edge. Star centers should show crisp radial detail rather than mushy lumps. For coins above the lowest grades, third-party grading service attribution is the practical authentication path, since the slab confirms both genuineness and die marriage when the holder lists a JR number. Surviving population sits in the low thousands across all grades, with circulated examples readily available to anyone building a type set, while Mint State pieces are scarce but obtainable for collectors willing to wait for the right offering.

For the broader context on how the bust dime series developed across its three decades of production and the design changes that led to this stabilized year, see the Capped Bust Dime series history.