1970 (S) Proof Washington Quarter
Strike Type
Coin Details
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)
ErrorVerified Legacy
1970-S Doubled Die Obverse WDDO-001
ErrorVerified Legacy
1970-S Doubled Die Reverse WDDR-001
ErrorVerified Legacy
1970-S Doubled Die Reverse WDDR-002

ErrorVerified Legacy
1970-S Repunched Mintmark RPM-001

ErrorVerified Legacy
1970-S Repunched Mintmark RPM-002

ErrorVerified Legacy
1970-S Repunched Mintmark RPM-003

ErrorVerified Legacy
1970-S Repunched Mintmark RPM-004

ErrorVerified Legacy
1970-S Repunched Mintmark RPM-005

ErrorVerified Legacy
1970-S Repunched Mintmark RPM-006

ErrorVerified Legacy
1970-S Repunched Mintmark RPM-007

ErrorVerified Legacy
1970-S Repunched Mintmark RPM-008
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