1829 Extra Large 10C

The 1829 Extra Large 10C Capped Bust Dime is the scarcest of four reverse-size variants the Philadelphia Mint produced that year, when engravers experimented with how large to punch the denomination on the working dies. A reverse-size variety is a coin sharing the same obverse design but struck from a reverse die where one specific element, here the "10 C." denomination inscription, was sunk into the working die using a different size of logotype punch. In 1829 the Mint cycled through Small 10C, Medium 10C, Large 10C, and Extra Large 10C reverse dies before settling on a standard for later years. The Extra Large is the rarest of the four, the result of a working die that saw only limited use before being retired. Mintage figures break out only at the date level, with 770,000 dimes total for 1829 across every reverse-size combination, so the Extra Large subset cannot be isolated in the records. Surviving population estimates fall in the low hundreds across all grades, and Mint State survivors are major rarities that anchor advanced Capped Bust dime collections. The coin is cataloged within the John Reich Collectors Society marriage system, where it carries a specific JR designation used to identify the obverse and reverse die pairing.

Authentication centers entirely on the "10 C." on the reverse. The Extra Large punch sinks the digits and the letter at roughly 25 to 30 percent larger than the Medium 10C variant, and side-by-side comparison against published plates of all four 1829 reverse-size dies is the only reliable diagnostic. Genuine examples weigh 2.7 grams on a 18.5 millimeter planchet struck in .8924 fine silver, and cast counterfeits betray themselves through grainy surface texture, soft rim definition, and weight that drifts outside the standard tolerance. Slabs from PCGS and NGC, the two leading third-party grading services known as TPGs, attribute the reverse-size variety directly on the label, which makes certified examples the safest entry point for collectors who lack reference plates. MS, meaning Mint State, designates coins graded 60 or higher that never circulated.

The collecting market treats the Extra Large 10C as one of the headline 1829 acquisitions. Date-set collectors who notice the variety distinction are willing to wait years for a problem-free circulated example to surface, and variety specialists routinely outbid type buyers when one appears. Original surfaces drive value more than raw grade once the coin clears Very Fine, with cleaned or retoned examples trading at a steep discount to coins with even gray patina. Mint State pieces, when they appear, almost always carry pedigreed chains of provenance reaching back to the major nineteenth-century collections. For the design context, the four-way reverse experiment, and where this die marriage sits among the other 1829 sub-types, see the Capped Bust Dime series history.