1842-O

The 1842-O Liberty Head half eagle came in the second year of $5 gold production at the New Orleans Mint, following the 40,120 pieces struck in 1840. Output dropped sharply to just 16,400 coins, the smallest New Orleans half eagle mintage of the early 1840s. The facility on Esplanade Avenue worked through whatever bullion the cotton and shipping trade brought in, and 1842 turned out to be a thin year for gold deposits at the port. Only one die pair was used for the entire run, which is unusual for the period and reflects how short the production window was. Most of the coins entered local commerce in the lower Mississippi valley and circulated for years before being pulled, melted, or lost.

The "O" mintmark sits on the reverse below the eagle, and on a genuine 1842-O it is sharply cut into the field with no roughness around its base. Because the 1842 Philadelphia issue exists with no mintmark and far higher survival, counterfeiters have long tried to add an "O" to a common Philadelphia coin to fake the New Orleans rarity. Authenticators check the area under magnification for tooling marks, raised metal at the edges of the letter, or a mintmark that sits on top of the field rather than seated into it. Weight should fall at 8.359 grams on a standard 21.6 mm planchet, and any meaningful deviation in either direction is a signal to look harder at the strike, color, and edge.

Survival is estimated at roughly 75 to 85 coins across all grades, and most of what trades hands grades VF to EF with mediocre eye appeal. Properly graded EF45 examples are about the nicest quality regularly available, and AU coins are scarce enough that even slabbed AU50 to AU53 pieces often carry surface issues. Doug Winter has placed mint state survivors at just two or three known, with all of them tied up in long-term holdings. Collector-grade examples have traded in the $3,000 to $5,000 range, while a clean AU coin moves into five figures when one surfaces. For broader context on this denomination, see our Liberty Head Half Eagle series history.