1878-S

The 1878-S Liberty Head Half Eagle came out of the San Francisco Mint with a reported mintage of 144,700 pieces, a dramatic rebound after several years of light production at the western facility. Through the early and mid-1870s the SF Mint had struck only modest numbers of half eagles, reflecting broader uncertainty around paper money, gold premiums, and federal monetary policy in the post-Civil War economy. By 1878 the country was preparing for resumption of specie payments under the Resumption Act of 1875, which would take full effect on January 1, 1879, restoring the convertibility of paper currency into gold. Mints across the country expanded gold coinage in anticipation, and San Francisco followed the same pattern. The 1878-S sits at the front edge of that normalization and marks the start of a multi-decade run of higher SF half eagle mintages that continued through the end of the Coronet series.

Authentication of the 1878-S is straightforward when the basic specifications check out. Genuine examples weigh 8.359 grams, measure 21.6 mm in diameter, and are struck in a 90 percent gold, 10 percent copper alloy with a reeded edge. The S mintmark appears on the reverse below the eagle, and collectors should confirm the punch matches known San Francisco style for 1878 rather than a tooled or added mintmark transferred from a Philadelphia coin. Strike quality is generally acceptable, though softness on the eagle's neck feathers and Liberty's hair is common. Surface marks from commercial use are the rule rather than the exception, so eye appeal and originality often matter more than raw grade when comparing examples.

For modern collectors the 1878-S is one of the more accessible San Francisco half eagles of the With Motto era. Circulated pieces in VF and XF turn up regularly at prices tied closely to gold content plus a modest numismatic premium. AU coins are available with patience, and Mint State examples exist but are scarcer than the mintage suggests, since most pieces saw heavy commercial use. The date works well as a type representative for a Type 2 With Motto half eagle from the West Coast and pairs naturally with the 1878 Philadelphia issue. Read the full Liberty Head Half Eagle series history.