1861-S

San Francisco struck just 24,000 quarter eagles in 1861, a Semi-Key delivery that landed in the same Civil War spring when specie payments suspended across the Union and gold coinage began disappearing from general circulation. The Pacific Coast economy continued to function on hard money longer than the East, since the western public had never accepted the greenback paper that supplanted gold and silver east of the Rocky Mountains, but the 1861-S still entered a contracting circulation environment as wartime hoarding pulled gold out of daily use. Western bullion routed preferentially into double eagles for Pacific commerce and Asian export throughout the year, leaving the quarter eagle denomination as a secondary product of the San Francisco coining schedule. The 24,000-piece delivery reflects that secondary status against a year when the branch struck more than a million double eagles from the same gold supply.

Authentication centers on the S mintmark below the eagle on the reverse. Genuine San Francisco punches show balanced curvature with consistent stroke width and proper geometric placement relative to the tail feathers, and counterfeiters working from common 1861 Philadelphia hosts produce added mintmarks that read too thin, too sharp, or sit at the wrong angle. Examination under 5x to 10x magnification should confirm undisturbed metal flow into the punch perimeter, with no solder transfer or tooling disturbance in the surrounding field. Comparing the S geometry against verified San Francisco working dies catches added-mintmark alterations that would otherwise pass casual inspection. Weight at 4.18 grams against the 0.900 gold alloy and 18-millimeter diameter against the reeded edge filter out base-metal core fabrications and the underweight casts that periodically surface in Civil War gold.

Survivor estimates run in the 100 to 175 range across all grades, concentrated in Very Fine through Extremely Fine after sustained West Coast circulation through the 1860s and 1870s. About Uncirculated coins appear infrequently and command meaningful premium for original surfaces, since many examples have been lightly cleaned. Mint State pieces are genuinely rare and any properly graded survivor at MS62 or finer is a true condition rarity within the San Francisco Civil War quarter eagle hierarchy. See the full Liberty Head Quarter Eagle series history.