1864-S

San Francisco struck 793,660 double eagles in 1864, sustaining heavy gold output as Grant's Overland Campaign and Sherman's Atlanta drive consumed Treasury resources in the East. The S-mint operated independent of the eastern monetary disruption that had collapsed Philadelphia production: California gold continued to flow into the facility, and Pacific Coast and Asian trade settled in coin rather than greenbacks. The 1864-S sits inside an unbroken sequence of high-mintage S-mint Type I issues, with 854,173 in 1862, 966,570 in 1863, 793,660 in 1864, and 1,042,500 in 1865.

The 1864-S is among the most poorly struck dates in the entire Type I S-mint run. Liberty's hair shows very weak detail at the curls and the top of the head, and obverses are commonly described as "pancake" flat. The reverse strikes more sharply, with weakness limited to wing tips and tail feathers. Total survival runs roughly 2,000 to 2,500 across all grades, but the Mint State pool of 125 to 150 coins owes almost everything to two shipwreck recoveries. The S.S. Brother Jonathan, which sank off Crescent City on July 30, 1865 and was recovered in 1996, yielded 108 examples of the 1864-S (about 36 in MS60 to MS63 and 60 more in AU). The S.S. Republic recovery in 2003 added 153 pieces, roughly 60 in Mint State. Coins from those wrecks struck on fresher dies show notably stronger hair detail and nearly full radial star centers, better than virtually any non-shipwreck example.

The 1864-S is a second-tier S-mint rarity, alongside 1854-S, 1860-S, 1861-S, 1862-S, 1867-S, and 1868-S, but it is more available in Mint State than peers of comparable scarcity precisely because of the shipwreck infusions. Pricing reflects that pattern: VF coins typically run $2,000 to $2,400, EF $2,400 to $2,800, AU55 around $3,500 to $4,000, and AU58 between $4,500 and $6,000. Mint State pricing climbs sharply, with MS60 around $9,000 to $11,000 and MS62 reaching the mid-twenties. A single NGC MS65 sold for $115,000 at Heritage's January 2012 FUN sale, the published auction record. Brother Jonathan and S.S. Republic pedigree holders typically command premiums of fifteen to forty percent over generic equivalents. No die varieties are recognized for the date. For broader Type I S-mint context, see the Liberty Head Double Eagle series history.