1866 Motto Proof

The 1866 With Motto Seated Liberty Dollar Proof is the first-year proof of the Type 2 reverse era, with a documented 725-piece mintage struck at the Philadelphia Mint as the inaugural proof issue carrying "IN GOD WE TRUST" on the reverse. The motto addition was authorized by the Act of March 3, 1865 (following the earlier April 22, 1864 act that authorized the motto for other denominations) and became the standard Seated Dollar reverse from 1866 through the series end in 1873. The live page mintage of 49,625 reflects the circulation-strike figure rather than the proof mintage.

Authentication of an 1866 Motto Seated Dollar Proof requires careful examination of strike quality, mirrored field character, and surface preservation under five to ten power magnification. The 1866 Motto Proof shows fully struck Liberty drapery, sharp eagle feather definition with the motto banner clearly defined, 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 1866 Motto Proof examples.

The 1866 Motto Seated Dollar Proof is a regular-classification proof entry on this site under the standard catalog convention for Seated Dollar proofs, with the 725-piece mintage and first-year-of-type status reflected in the prose rather than the badge tier. The 1866 Motto Proof pairs with the 1866 No Motto Proof as the matched type-transition pair, with the 1866 No Motto carrying unique-class rarity (only 2 known) and the 1866 Motto representing the standard first-year With Motto issue. Auction records for confirmed 1866 Motto Proof examples cluster in four-figure prices for Proof-63 and Proof-64 grades, with Cameo premiums applying at higher grade levels. For the 1866 motto-addition transition history, see the Seated Liberty Dollar series history.