1907 Liberty Proof

The 1907 proof Liberty Head Double Eagle closes the Coronet Head proof series, the final Philadelphia proof struck of the design before the Saint-Gaudens type entered production later that year. The Mint recorded 78 pieces for collectors, the smallest regular proof double eagle production since 1898 and the lowest figure of the late-series cluster. Business strike output ran to 1,451,786 Liberty Head pieces at Philadelphia together with the 1907-D and 1907-S branch issues, all of which preceded the design changeover. The Philadelphia proof is structurally distinct from those circulation strikes, struck on polished planchets from a specially prepared die pair and intended from inception for cabinet purchasers placing advance orders.

Heritage and Stack's Bowers cataloguers attribute the issue as JD-1, the only known dies for the date, with a Sheldon rating of Rarity-5 in the framework John Dannreuther established for proof gold. Dannreuther estimates the surviving population at roughly forty-five to sixty examples in all grades. Cataloguers note that the 1907 proofs show notably heavier frost on the devices than the 1902 through 1906 issues that preceded them, and a higher percentage of survivors carry Cameo or Ultra Cameo designations at NGC than is typical for the brilliant-finish era, though PCGS has not certified a Deep Cameo example. PCGS has assigned only two Liberty Head Double Eagles a PR67 grade across the entire series, and the 1907 Cameo is one of them. The auction record stands at $504,000 for a Proof-67 Cameo NGC example, realized at Heritage in August 2023.

Specialists treat the late-series cluster of 1905, 1906, and 1907 as a unit defined by similar finish and similar availability, with mintages of 92, 94, and 78 respectively. The 1907 carries an additional collecting premium beyond its cluster position because it is the terminal proof of the type, and last-year-of-issue collectors who would not otherwise pursue a proof Liberty Double Eagle compete for examples alongside series specialists. Those tracing how the proof type closed and how the design transitioned to Saint-Gaudens can consult the Liberty Head Double Eagle series history.