1887 Proof

Proof production for 1887 stepped down sharply to 710 pieces at Philadelphia, the lowest figure in the entire late-series Philadelphia proof run apart from 1889's 711 and 1890's 590. Circulation output that year reached 11,283,229 dimes, the largest Philadelphia delivery in the series since the 1850s and a sign that Treasury channels had absorbed the suppressed-output years of the early 1880s and were calling for fresh inventory. The proof issue's drop against that bulk circulation backdrop reflects a subscription roster that had stabilized at a smaller institutional base rather than a withdrawal of Mint program support: the Cabinet office continued to fill standing orders from year-set collectors and major cabinets, but the speculative subscription wave of the early 1880s had moved on. The 1887 proof carries the Legend obverse with United States of America wrapping above Liberty's seated figure and the conventional wreath reverse, both engraving lineages from Christian Gobrecht's 1837 conception refined through five decades of Mint working dies.

Authentication on the 1887 proof rests on close-collar diagnostics applied with care because the year's enormous circulation strike sometimes produced early-die-state pieces with strong reflectivity. A genuine proof shows deeply mirrored watery fields under a 10x loupe (a jeweler's magnifier) with controlled die-polish lines and no radial flow lines from the design, set against the Brilliant Proof finish standard for late-series work. Rims must rise fully squared and perpendicular to the field, the signature of multiple medal-press blows; denticles, the tooth-like beads ringing the rim, should appear sharp and complete on both sides. Cameo and Deep Cameo designations are awarded by PCGS, the Professional Coin Grading Service, and NGC, the Numismatic Guaranty Company, on a smaller portion of the 1887 population than for the early-1880s dates, the result of less aggressive device-frosting preparation on later 1880s working dies. Specifications must hold at 2.50 grams, 17.9 millimeters, .900 silver with a reeded edge. The combination of squared rims and watery field structure remains the most reliable proof indicator regardless of mirror depth.

For collectors, the 1887 proof is one of the scarcer late-series Philadelphia issues by mintage, though survival rates remain healthy enough that PR60 through PR64 examples turn up regularly at major auctions and through specialist dealers. Gem PR65 and finer pieces are scarce relative to demand, and Cameo or Deep Cameo gems command meaningful premiums above the standard Brilliant Proof equivalents. Pricing tracks the broader late-1880s proof band rather than the specific 710-piece mintage, and the year sits in a price tier just above the 1880-1883 cluster for matched-grade examples. The Regular classification on this page follows site convention for proof entries; the lower mintage and late-series position are conveyed in the prose, not the badge. For the broader story of Gobrecht's design, the 1892 Barber Dime transition, and the series' proof program, see the Seated Liberty Dime series history.