1839

The 1839 Half Eagle launches Christian Gobrecht's Coronet Liberty design, which would run on five-dollar gold pieces continuously through 1908, the longest single design tenure in United States coinage. This first-year Philadelphia issue is a one-year type. The portrait sits higher in the field than on later strikes, the obverse stars are spaced differently, and the planchet measures 22.5 mm across rather than the 21.6 mm used from later 1840 forward. Specialists call the wider format the broad mill. A revised obverse hub introduced in 1840 was retained for the next sixty-eight years, leaving the 1839 alone in its sub-type.

Philadelphia struck 118,143 pieces, and Doug Winter notes that nearly all entered commerce. Survival skews to lightly worn grades from VF through XF, where the issue is collectable for under about $1,500. Mint State examples are scarce, with most certified coins clustering at MS61 to MS62 and a small population reaching MS64. Authentication starts with the broad-mill diameter and the higher portrait placement; a raised dot on Liberty's neck is reported on every known 1839 strike and is a useful die marker. Standard checks apply as well: weight should hit 8.359 grams, specific gravity sits near 17.16 for the 0.900 fine alloy, and reeded edges should look struck rather than seamed, since cast counterfeits often fail at the edge join.

Collectors approach the 1839 from two directions. Type collectors want one example of the broad-mill obverse to anchor a Liberty Head set, since no other Philadelphia year carries the wider format. Date specialists chase higher grades, where premiums climb sharply: an MS64 has realized between roughly $18,400 and $80,500 at public auction depending on eye appeal and provenance. Either way, the date marks the opening chapter of the longest gold-coin design in American history. For the broader story of the type, see the Liberty Head Half Eagle series history.