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1970 (S) Proof Washington Quarter

Strike Type
1970 (S) Proof Washington Quarter

Coin Details

Year
1970
Denomination
Quarter
Mint Mark
S
Strike Type
Proof
Series
Washington Clad and Silver Proof Quarters 1965-1998
Designer
John Flanagan
Mintage
2,632,810
Composition
75% Copper, 25% Nickel over a pure Copper center
Weight
5.67g
Diameter
24.3mm
Edge
Reeded

Value Estimates

$6.25 - $6.25

Values as of May 2026 β€” estimates reflect typical grades (G-4 through MS-67). Coins in lower or exceptional grades may fall outside this range.

Auction Record

$110 PR69 08-06-2003 Heritage Auctions

Description

A proof Washington quarter from 1970, struck at the San Francisco Mint with the "S" mintmark. Struck in standard copper-nickel clad composition, this coin was produced using specially prepared dies and polished planchets, resulting in mirror-like fields and frosted design elements characteristic of modern proof coinage. The obverse features John Flanagan's portrait of George Washington, and the reverse depicts a heraldic eagle.

External References

Error Varieties(11)

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