1886-S

San Francisco struck 206,524 dimes in 1886, the third of the three consecutive S-mint Key Dates that close the Seated Liberty series before the 1892 Barber redesign. The mintage falls between the bookend Keys (the 564,969-piece 1884-S above and the 43,690-piece 1885-S below) and sits well under the 6,377,570-piece Philadelphia delivery for the year. The coin is a Legend, No Arrows issue under the 1873 weight standard of 2.50 grams, with the S mintmark inside the wreath on the reverse, below the bow, in the standard placement the branch had used continuously since the dime program resumed in 1856. Working-stock demand on the West Coast drove the small run; condition rarity is what made the date a Key in the modern catalog.

Strike quality on the issue is acceptable for a branch-mint coin of the period, with most documented examples showing reasonable central detail on Liberty's head and the upper shield, though softness on the wreath ribbon bow and the rim definition can appear on later working-die states. The genuine collecting reality is severe condition rarity rather than absolute scarcity, since 206,524 pieces is not a low-survival figure by Seated standards. Most surviving examples cluster heavily in Good through Fine, where heavy West Coast commerce wore the coin through the late 1880s and 1890s, with Very Fine and Extremely Fine pieces scarce, About Uncirculated coins genuinely difficult, and Mint State examples approaching apex condition rarity for the closing-decade San Francisco run. PCGS, the Professional Coin Grading Service, and NGC, the Numismatic Guaranty Company, population reports show the steep drop above mid-circulated grades, and certified gem examples surface at major auctions infrequently. Authentication relies on the 2.50-gram weight, 17.9-millimeter reeded edge, and the S mintmark placement and shape; the standard counterfeit threat is an S added to a Philadelphia 1886 to capture the branch-mint premium, and certification by a major grading service is the working standard for any purchase above Very Fine.

For collectors, the 1886-S is the third required S-mint Key for a date-and-mint Seated Dime set, completing the trio that includes the 1884-S and the 1885-S. Circulated examples through Fine command meaningful premiums over generic Seated dime pricing, and any coin offered above Extremely Fine warrants certified status as a non-negotiable verification step. The Key Date classification reflects condition rarity and set-completion demand rather than absolute mintage scarcity, and that pattern has been stable for decades. For the broader story of Gobrecht's design, the 1892 Barber Dime transition, and the series' production arc, see the Seated Liberty Dime series history.