1915-S

San Francisco's 1915-S Barber half ran 1,604,000 circulation pieces, the largest 1915 output across the three operating mints and the highest San Francisco mintage of the year. The S mintmark sits in the standard Barber-half location above the eagle's tail feathers on the reverse, between the tail and the period after AMERICA. The 1915 production year is the final year of Barber half-dollar coinage; Adolph Weinman's Walking Liberty design replaced the Charles Barber half across all three operating mints beginning in 1916. By 1915 San Francisco had been striking Barber halves for twenty-four years (the full run), longer than any other facility in the series, and the year's output gave the branch mint the largest 1915 contribution before the design changeover.

Strike on the 1915-S runs to the softer end of typical Barber half quality, with weakness common on the eagle's claws and on the upper wreath leaves on Liberty's cap, a characteristic pattern of the San Francisco operation through the late series. The LIBERTY headband on Liberty's cap functions as the standard wear indicator: the letters L and I wear first, and their full presence supports an AU45 or finer assignment. PCGS, the Professional Coin Grading Service, and NGC populations cluster heavily through Very Good and Fine, thin meaningfully through XF and AU, and become moderately scarce above MS63. Counterfeit risk on the 1915-S itself is low at the issue's modest price levels, but the issue is a documented host for removal of the S mintmark to create a false 1915 Philadelphia Key Date, so any premium-grade purchase rewards inspection of the reverse field for tooling marks. Routine authentication runs through the 12.50 g weight check, the 30.6 mm diameter verification, and the standard reeded edge inspection.

The 1915-S sits firmly in the common-date tier of Barber halves on raw mintage grounds, available raw in circulated grades for modest premiums and certified through MS64 without unusual cost. Year-set, type-set, and series-completion collectors absorb most of the supply, with the date carrying a final-year collecting premium for buyers building a 1915 three-mint set alongside the Key Date 1915 Philadelphia and the higher-mintage 1915-D. A sharply struck Mint State example with crisp claws and full wreath detail is worth seeking given the issue's typical softness profile. For the broader story of Charles Barber's design, the 1916 Walking Liberty transition, and the series' production arc, see the Barber Half Dollar series history.