1870 Proof Seated Liberty Quarter
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
$13,200 PR67 01-14-2019 Heritage Auctions
Description
The 1870 Proof Seated Liberty Quarter is a proof quarter struck at the Philadelphia Mint, part of the Seated Liberty Quarters 1838-1891 series. With a mintage of 1,000, this is an extremely rare issue — the lowest mintage among 3 mint variants, representing only 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 a heraldic eagle with shield on breast, olive branch and arrows in talons, with a banner reading E PLURIBUS UNUM. First year of Carson City Mint quarter production — the beginning of one of numismatics' most collectible mintmark series. 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 $1.1K. Struck in 90% silver, 10% copper, weighing 6.2 grams, 24.3 mm in diameter, with a reeded edge. Cataloged as PCGS #5569.
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