1866 Proof Seated Liberty Half Dime
Strike Type
Coin Details
Value Estimates
Values as of May 2026 — estimates reflect typical grades (G-4 through MS-63). Coins in lower or exceptional grades may fall outside this range.
Auction Record
$14,100 PR68 08-02-2012 Heritage Auctions
Description
The 1866 Proof Seated Liberty Half Dime is a proof dime struck at the Philadelphia Mint, part of the Seated Liberty Half Dimes 1837-1873 series. With a mintage of 725, this is an extremely rare issue — the lowest mintage among 3 mint variants, representing only less than 1% of total production. 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 and the reverse displays an agricultural wreath enclosing the denomination. Minted during Reconstruction and the Gilded Age, as the nation healed from civil war and debated the role of silver and gold in the monetary system. As a proof issue, this coin was struck multiple times on specially prepared polished planchets using polished dies, producing mirror-like fields and frosted design elements prized by collectors. Struck at the original U.S. Mint facility, in continuous operation since 1792. Estimated market value is approximately $668. Struck in 90% silver, 10% copper, weighing 1.24 grams, 15.9 mm in diameter, with a reeded edge. Cataloged as PCGS #4449.
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