1878 Twenty-Cent Piece (Proof)

The 1878 twenty-cent piece marks the last year of the denomination's existence and, like 1877, was struck only in proof format for collectors rather than for circulation. It closes out one of the shortest-lived denominations in US Mint history on a fittingly rare and collectible note.

For collectors pursuing a complete run of twenty-cent pieces by date, the 1878 proof is an essential and highly prized final piece, marking the formal end of the series.

The twenty-cent piece had already proven a commercial failure by the late 1870s due to confusion with the quarter dollar, and Congress abolished the denomination outright in 1878. In its last year, the Mint struck only proof examples for collectors, since there was no remaining demand for circulation strikes.

Production was extremely limited, reflecting both waning collector interest in an unpopular, soon-to-be-defunct coin and the Mint's minimal proof output overall for the series by this point. The 1878 proof stands as the closing chapter of the series, immediately preceding its formal discontinuation.

The design is identical to earlier twenty-cent pieces, with Liberty seated on a rock holding a shield and liberty-cap-topped pole on the obverse, and an eagle grasping arrows and an olive branch on the reverse, inscribed TWENTY CENTS. No mintmark appears, since it was struck at Philadelphia.

As a proof issue, the coin should display fully mirrored fields and crisp, frosted design elements characteristic of specially prepared coinage rather than the softer texture of a circulation strike. Given its rarity, third-party certification is the standard way collectors confirm authenticity and grade.

As the final-year, proof-only issue of a short-lived denomination, the 1878 twenty-cent piece is a genuine rarity that trades for strong prices even in typical proof grades, often reaching into the thousands of dollars, with premium cameo or gem examples commanding considerably more.

Its combination of low original mintage, historical significance as the last year of the series, and strong demand from date-set collectors keeps it firmly positioned as one of the more expensive single coins within the twenty-cent piece series.