1860-S Liberty Seated Quarter. Briggs 1-A, the only known dies. EF-40 (PCGS).，Pleasing dove gray patina with warmer olive-russet outlines to the reverse devices. Uncommonly bold EF definition remains to the both sides, the surfaces of which are also exceptionally smooth in appearance for a lightly circulated early San Francisco Mint Liberty Seated quarter. Produced to the extent of just 56,000 pieces and suffering a grievous rate of attrition through circulation, the 1860-S is a highly elusive Liberty Seated quarter even in the lowest circulated grades. Extremely Fine survivors, as here, merit an impressive Rarity-6+ rating from Larry Briggs in the 1991 reference <em>The Comprehensive Encyclopedia of United States Liberty Seated Quarters</em>. With Mint State survivors all but unknown, this coin represents a significant and fleeting bidding opportunity for the advanced collector specializing in this extremely challenging Liberty Seated series.，，
