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1866 Proof Silver Three Cent Piece

Strike Type
1866 Proof Silver Three Cent Piece

Coin Details

Year
1866
Denomination
Three Cent
Mint Mark
P
Strike Type
Proof
Series
Silver Three Cent Pieces 1851-1873
Designer
James Barton Longacre
Mintage
725
Composition
90% Silver, 10% Copper
Weight
0.75g
Diameter
14.3mm
Edge
Plain

Value Estimates

$1,065 - $1,065

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

$24,150 PR68 07-01-2008 Heritage Auctions

Description

The 1866 Proof Silver Three Cent Piece is a proof cent struck at the Philadelphia Mint, part of the Silver Three Cent Pieces 1851-1873 series. With a mintage of 725, this is an extremely rare issue — the scarcer of two mint variants, with 3% of total production. The obverse features a six-pointed star enclosing a Union shield and the reverse displays a Roman numeral III (three) within a large letter C. 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 $1.1K. Struck in 90% silver, 10% copper, weighing 0.75 grams, 14.3 mm in diameter, with a plain edge. Cataloged as PCGS #3716.

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