1857-O

The 1857-O Liberty Head half eagle was struck at the New Orleans Mint in a quantity of just 13,000 pieces, placing it in the lowest tier of New Orleans half eagle production alongside the 1856-O at 10,000, the 1855-O at 11,100, the 1847-O at 12,000, and the 1842-O Small Date at 16,400. Bullion deposits at the regional facility were limited in 1857, and gold half eagle output took a back seat to the larger silver and gold dollar coinages that occupied most of the press time. Coins served general commerce in the lower Mississippi valley and Gulf trade, and most circulated heavily before the Civil War shut the facility in 1861. The reverse mintmark sits below the eagle.

The series specifications hold throughout: 8.359 grams, 21.6 millimeters, 90 percent gold and 10 percent copper, with a reeded edge. Authenticators look first at the mintmark itself, since added-O counterfeits exist on more common Philadelphia 1857 half eagles. A genuine New Orleans O sits in the correct position below the eagle and ties cleanly to the surrounding devices, rather than appearing as a soft, slightly raised pad of metal. Strike weakness on the stars and on the eagle's neck feathers is common and should not be mistaken for wear; honest circulation flattens the high points of the hair curl and shield arrows uniformly, while a soft strike leaves the surrounding fields frosty. Weight should fall within roughly 0.02 grams of the 8.359 gram standard.

Modern survival is estimated at roughly 225 to 275 examples across all grades, with the population concentrated in VF and EF. Problem-free AU coins are genuinely scarce, and mint state survivors number in the low single digits, with perhaps four to six pieces accepted by the major services. The 1857-O ranks among the keys of the New Orleans half eagle run and is treated by date specialists as a peer of the 1855-O and 1856-O rather than a step below them. The Heritage 2014 FUN sale's MS61 example remains a useful benchmark for true mint state pricing in the series. For broader design and series context, see the Liberty Head Half Eagle series history.