1876

Struck in the Centennial year amid persistent gold-coin export pressure and minimal domestic eagle demand on the East Coast, the 1876 Philadelphia ten-dollar carries one of the smallest business-strike mintages in the entire 180-issue Liberty Head Eagle series. Independent references including PCGS CoinFacts, Doug Winter Numismatics, and CoinWeek all cite a delivery of 687 pieces, and survival estimates cluster between 30 and 50 across all grades. Doug Winter places this issue in the top tier of undervalued Reconstruction-era keys alongside the 1873 and 1877, and considers the date "comically undervalued" relative to comparably scarce branch-mint eagles such as the 1883-O.

Authentication should begin with the standard $10 specifications: 16.718 grams gross weight, 27 mm diameter, .900 fine, with a specific gravity near 17.2; deviations greater than roughly 0.05 grams or any density mismatch are immediate red flags on a six-figure rarity. Because original mintage was so small, the working dies remained in service for the entire run, and most survivors show prooflike or semi-prooflike fields broken by deep, scattered abrasions consistent with bag handling. Examine the date numerals and the lower reverse for tooled or re-engraved details, and study the rim and reeding for the fine spacing produced by Philadelphia's collar; cast or transfer-die counterfeits typically betray themselves through soft denticles and granular fields. CAC has approved only roughly seven examples across the entire population.

The collecting landscape is defined by attrition. Heritage records show a PCGS AU58 CAC realizing $70,500 at the January 2015 FUN sale, with a non-CAC PCGS AU58 bringing $39,600 in August 2023; the finest known is a single PCGS MS60 from the Tyrant Collection. Most coins offered today fall in the EF40 to AU55 band, and clean, original-surfaced pieces command meaningful premiums over the abraded norm. For broader context on type evolution, mintage cycles, and the post-Civil War export economics that shaped this date, see the Liberty Head Eagle series history.