1891-S

The 1891-S quarter records a San Francisco delivery of 2,216,000 pieces, the largest branch-mint output of the late series and the final S-mint Seated Liberty Quarter before the 1892 design changeover. San Francisco had been producing quarters again since 1888 after an eight-year pause, and the 1891-S figure shows the branch mint working at full commercial scale to supply West Coast circulation in the final year of Christian Gobrecht's design. Where Philadelphia stockpiled the 1891 against the upcoming Barber Quarter transition, San Francisco appears to have prioritized current circulating supply: most of the 2.2 million pieces actually entered Pacific Coast commerce, where hard-money trade kept silver moving rather than allowing reserve accumulation. The coin belongs to the With Motto, No Arrows subtype and carries an S mintmark below the eagle on the reverse, struck on the 6.25 gram weight standard set by the Coinage Act of February 12, 1873.

Strike quality on the 1891-S is generally good but variable, with some examples showing the soft head and shield detail typical of San Francisco silver from this period while others come well-struck across the central design. Survivors today are heavily skewed toward circulated grades because most of the issue saw real commerce, and the typical 1891-S in the market is a Very Fine or Extremely Fine coin rather than a Mint State piece. About Uncirculated examples are reasonably available at moderate cost, while choice Mint State coins are meaningfully scarcer than the 2.2 million mintage might imply, and gem grades are condition rarities that draw firm registry-set bids. Authentication should focus on the S mintmark, which must show natural punch character and proper position below the eagle. Weight on a genuine planchet falls within tolerance of 6.25 grams, and PCGS, the Professional Coin Grading Service, or NGC certification is the standard above well-circulated grades.

The 1891-S is the natural San Francisco type-coin choice for collectors who want a single branch-mint Seated Liberty Quarter representing the final subtype and the close of the series. The issue is accessible in circulated grades at modest prices, and works well as the budget anchor in a late-series date-and-mintmark set where the Philadelphia low-mintage years and the 1891-O carry the cost. Prices in About Uncirculated have held steady over the past decade, while MS64 and finer have appreciated as type-set and registry-set demand has tightened available supply. Original-skin pieces with even gray patina trade at firm premiums to dipped or recolored material. For the broader story of Gobrecht's design, the 1892 Barber Quarter transition, and the series' production arc, see the Seated Liberty Quarter series history.