1878

Philadelphia delivered 2,260,000 quarters in 1878, a sharp pullback from the 10.9 million pieces of 1877 and the start of a multi-year decline in Philadelphia subsidiary silver production that would carry through the 1879 to 1881 sub-15,000-piece mintages. The Bland-Allison Act of February 28, 1878 reauthorized silver dollar coinage at scale and redirected the Mint's silver capacity toward the new Morgan dollar program, and quarter production for the year fell accordingly. The January 1879 Specie Resumption was now imminent, and the Treasury was confident enough in the supply of subsidiary silver already in circulation that smaller mintages were sustainable across the denomination. Design remained the post-Arrows With Motto form: the motto "IN GOD WE TRUST" on the banner above the eagle, no arrows at the date, and the 6.25-gram weight standard from the Coinage Act of February 12, 1873.

What collectors examine on the issue starts with strike and surface. The 1878 Philadelphia output is generally well-struck on early-die-state coins, with crisp obverse stars and full drapery at Liberty's elbow; later die states can show some softness on the central shield horizontals and on the eagle's right leg. The two-million-plus mintage means circulated examples remain common, but Mint State survival is meaningfully thinner than the 1876 and 1877 Philadelphia issues because so much of the year's production reached commerce and stayed there. Authentication concerns at the date level are modest, but the 1878 is occasionally a host for altered-date work toward the scarcer late-1870s S-mint and CC issues; original surfaces with clean digits are the baseline. A genuine planchet falls within tolerance of 6.25 grams.

Population data from PCGS, the Professional Coin Grading Service, and NGC, the Numismatic Guaranty Company, shows the issue is common in Fine through Extremely Fine, reasonably available in About Uncirculated, and condition-scarce above MS63. The MS65 and above tier is a real reach because the lower mintage and the redirection of silver capacity to dollars meant fewer Mint State 1878 quarters were preserved than the comparable 1876 and 1877 issues. For a date-set builder, the 1878 is the last high-mintage Philadelphia quarter before the four-figure-mintage rarities of 1879 through 1881 and a recommended type representative for the post-Arrows subtype. For the broader story of Gobrecht's design and the series' late-1870s production, see the Seated Liberty Quarter series history.