1873 Closed 3 Proof

The 1873 Liberty Head proof half eagle was struck during one of the most consequential years in U.S. monetary history. The Coinage Act of February 12, 1873 (nicknamed the "Crime of '73" by silver advocates) reorganized the Mint and demonetized the standard silver dollar, leaving gold as the sole basis of redemption. Against that backdrop, the Philadelphia Mint produced a tiny presentation run of proof half eagles for collectors, assay commissions, and dignitaries. Researcher John Dannreuther reports roughly 25 pieces struck. Because proofs were prepared early in the year before working dies were modified, the proof issue uses the Closed 3 logotype, distinguishing it from the Open 3 business strikes produced after April 1873. The info card lists the combined 1873 Philadelphia circulation mintage of 112,580 pieces; the proof figure is a separate, far smaller number folded into that year's totals.

Authenticating an 1873 proof half eagle begins with surface character. Genuine examples show deeply reflective mirrored fields against frosted central devices, the result of polished planchets struck twice on a medal press at low speed. The rims are sharp and squared, with a knife-edge transition into the field that no business strike can replicate. Verify the Closed 3 in the date: the upper and lower knobs of the 3 nearly touch, leaving only a narrow vertical gap. Weight should fall at 8.359 grams within Mint tolerance, and the diameter at 21.6 mm. A specific gravity test near 17.2 confirms the 90 percent gold composition. Because the population is so small, every candidate should be submitted to PCGS or NGC; raw examples carry meaningful risk of being impaired business strikes misrepresented as proofs.

For modern collectors, the 1873 proof ranks among the rarest dates in the entire With Motto Liberty half eagle proof run. PCGS and NGC population reports typically show fewer than two dozen surviving pieces across all grades, with most in the PR60 to PR63 range. Cameo-designated examples are exceedingly scarce, and Deep Cameo coins are nearly nonexistent. Auction appearances are infrequent, often years apart, and prices climb sharply with eye appeal: mid-grade pieces bring strong five figures, while choice cameos have crossed into six-figure territory. For more on the design and proof program, see our Liberty Head Half Eagle series history.