1847-O

Only 12,000 Liberty Head half eagles left the New Orleans coining presses in 1847, the lowest figure for the denomination at that branch during the entire pre-Civil War run. The number stands out against the same year's Philadelphia output of more than 915,000 half eagles. The cause was an allocation choice: with limited bullion on hand, the Mint directed most of its capacity toward silver coinage that season. Half eagles were a low priority, and the dies were used briefly before being set aside. The result is a single delivery that places 1847-O at the bottom of the New Orleans half eagle mintage chart, well below 1842-O and 1845-O. Christian Gobrecht's Coronet portrait pairs with the heraldic eagle reverse, with the O mintmark below the eagle.

Authentication carries weight on a date this scarce, because the low mintage and strong demand make 1847-O a frequent target for deception. Genuine examples weigh 8.359 grams on a 21.6 mm planchet of 0.900 fine gold with a reeded edge, and any meaningful deviation from that standard is grounds to walk away. The most common scheme is an added O mintmark applied to a Philadelphia 1847 host. Examine the mintmark under 10x magnification: an authentic O sits flush in the field with consistent metal flow into the surrounding surfaces, while an added mintmark typically shows a tooling halo, a faint join line, or a font that does not match the period punch. Strike weakness on the obverse stars and the eagle's feather detail is normal and should not be confused with wear; genuine soft-strike areas hold mint frost in the recesses, while honest wear leaves the metal smooth.

PCGS and NGC population data point to roughly 150 to 200 known examples across all grades, with the bulk landing in Fine through Very Fine. About Uncirculated coins draw substantial premiums, often climbing into the five figures at recent Heritage and Stack's Bowers sales, and Mint State pieces are extreme rarities with single-digit confirmed examples. For any serious New Orleans half eagle date set, 1847-O is the foundational anchor and usually the most difficult slot to fill in original condition. Collectors lean heavily on certified, problem-free coins given the cleaning and added-mintmark issues around this date. For background, see our Liberty Head Half Eagle series history.