1871-S

San Francisco struck 2,178,000 half dollars in 1871, the largest single-year output the western mint had ever produced in this denomination and the highest half dollar mintage from any facility since 1861. The figure dwarfed the parallel Carson City production of 153,950 coins by more than fourteen times and reflected the heavy commercial demand for circulating silver on the Pacific Coast. Each piece carries the Type 5 With Motto reverse design, which had been standard since 1866, when the scroll bearing "IN GOD WE TRUST" was added above the eagle following Civil War-era religious sentiment.

Strike quality on 1871-S half dollars is generally good for a San Francisco product of this era. Dies arrived from Philadelphia and were typically used until heavily worn, but the year's coinage shows above-average detail on Liberty's head, the shield lines, and the eagle's wing feathers. Luster on the small surviving Mint State population tends to be frosty rather than prooflike, and surfaces often display the heavy bagmarks common to coins that traveled in commerce before being set aside. Circulated examples are readily obtainable across the Good through Extremely Fine range and represent one of the more affordable San Francisco With Motto dates. Mint State coins are genuinely scarce, with most certified pieces grading MS62 through MS64; Gem examples at MS65 and above are rare and command strong premiums when they appear at auction.

The 1871-S is frequently the first San Francisco half dollar a date-set collector acquires, since the large mintage left enough survivors to keep prices reasonable in collector grades while still offering authentic mint-mark character. Pieces show clear S mintmarks beneath the eagle and remain a satisfying way to own a coin produced during San Francisco's transition from a primarily gold-coining facility to a full-service silver producer. For mintage tables, design subtype boundaries, and proof issue counts, see the Seated Liberty Half Dollar series history.