1878-S

The 1878-S marks a quiet pivot point for San Francisco eagle production. After more than two decades of consistently small outputs, the branch struck just 26,100 examples this year, but the date opens a stretch of climbing mintages that would soon reshape the With Motto series. Doug Winter places it as "only semi-scarce" in About Uncirculated, a more forgiving assessment than its tiny mintage suggests, because survivorship favored circulated grades that traded actively in West Coast commerce.

Roughly 125 to 250 pieces are believed to survive, the bulk grading Fine through Extremely Fine with edge bumps, light obverse rubs, and the soft striking detail typical of late 1870s S-mint gold. AU58 is the practical ceiling for most collectors; the PCGS census thins dramatically above that point, with one or two low-end Mint State pieces and a single PCGS MS64 standing alone at the top. Authentication should focus on the San Francisco mintmark beneath the eagle, which on genuine examples sits cleanly within the wreath ribbons rather than touching them, and on metrology, 16.718 grams and a specific gravity near 17.2 will rule out pieces that have been polished, plugged, or repaired around the rims, all common interventions on circulated S-mint eagles. Die markers in the date area help distinguish honest wear from added-mintmark fabrications copied off lower-mintage 1870s issues.

Pricing reflects the AU plateau: dealer asks for NGC AU55 examples have hovered around $2,100 to $2,500 in recent retail listings, while problem-free AU58 pieces command meaningful premiums and Mint State coins enter five-figure territory. Set builders chasing San Francisco eagles year by year often land here mid-budget, far easier than the legendary 1878-CC, but more demanding than the readily available 1878 Philadelphia. Collectors should hold out for original surfaces with even color, since cleaned and dipped examples of this date are common and trade at noticeable discounts. For broader context on type evolution and key-date hierarchy, see the Liberty Head Eagle series history.