1864 Proof

The 1864 Seated Liberty Dollar Proof is struck at the Philadelphia Mint with a documented mintage of 470 pieces per the Mint Director annual report. The 470-piece figure holds the lower Civil War-era proof Seated Dollar production tier, close to the 460-piece 1863 figure. The 1864 Proof carries the standard Christian Gobrecht obverse and the No Motto reverse that defines the early series through 1865. The live page mintage of 31,170 reflects the circulation-strike figure rather than the proof mintage. The 1864 also marks the year that the Act of April 22, 1864 authorized "IN GOD WE TRUST" for U.S. coinage, though the motto did not appear on the silver dollar until 1866.

Authentication of an 1864 Seated Dollar Proof requires careful examination of strike quality, mirrored field character, and surface preservation under five to ten power magnification. The 1864 Proof shows fully struck Liberty drapery, sharp eagle feather definition, and deep mirror fields that distinguish formal proof production from business-strike prooflike examples. PCGS, the Professional Coin Grading Service, and NGC apply standard proof grading conventions across the Seated Dollar proof sequence. Cameo and Deep Cameo designations are uncommon for 1864 Proof examples.

The 1864 Seated Dollar Proof is a regular-classification proof entry on this site under the standard catalog convention for Seated Dollar proofs, with the 470-piece mintage and standard proof status reflected in the prose rather than the badge tier. The 1864 Proof pairs with the broader 1859 through 1865 No Motto P-mint proof sequence as the matched documented-mintage proof era. Auction records for confirmed 1864 Proof examples cluster in four-figure prices for Proof-63 and Proof-64 grades, with Cameo premiums applying at higher grade levels. For the Civil War-era Seated Dollar proof production context and the April 22, 1864 motto authorization act, see the Seated Liberty Dollar series history.