1866 Proof Seated Liberty Half Dollar - Motto
Strike Type
Coin Details
Value Estimates
Values as of May 2026 — estimates reflect typical grades (G-4 through MS-67). Coins in lower or exceptional grades may fall outside this range.
Auction Record
$14,375 GEM PR 05-01-2006 Stack's
Description
The 1866 Proof Seated Liberty Half Dollar - Motto is a proof half dollar struck at the Philadelphia Mint, part of the Seated Liberty Half Dollars 1839-1891 series. With a mintage of only 725, this is an extremely rare issue. The obverse features Liberty seated on a rock, holding a pole surmounted by a Phrygian liberty cap in her left hand and a shield inscribed LIBERTY in her right, while the reverse displays a heraldic eagle with shield on breast, olive branch and arrows in talons, with a banner reading E PLURIBUS UNUM. Designed by Thomas Sully/Christian Gobrecht. Struck in 90% silver, 10% copper, weighing 12.4 grams, 30 mm in diameter, with a reeded edge. Cataloged as PCGS #6424. The Seated Liberty Half Dollar was produced over more than 50 years across multiple subtypes reflecting weight changes and motto additions. Carson City Mint issues are especially sought after. The 1878-S is a condition rarity, and the 1853-O "No Arrows" is extremely rare with only four known.
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