Proof Capped Bust Dimes (Buy on eBay) were struck by the United States Mint for most years from 1820 until the conclusion of the series. Production always took place at minimal levels, relegating this segment of the series to advanced collectors only.
Simply stated, all Proof Capped Bust Dimes are rare, with most dates coming onto the market very infrequently. Within the initial subtype, there is only a single proof example currently identified for the year 1820 and a handful of pieces identified for most other dates. There are no proof examples known to exist for the years 1823 and 1826. Within the second subtype, usually around a half dozen pieces exist for each date with a few exceptions. The 1832 issue is believed to be represented only by a single proof example. The 1837 issue is believed to be represented by two proofs, but they have not appeared on the market since the early 1980’s.
Given the absolute scarcity and the infrequency with which the coins come to market, assembling a complete set of Proof Capped Bust Dimes is virtually impossible. Even the the acquisition of a single example would be a true highlight for the advanced collector.