• 1966 Washington Quarters, Special Mint Set Values

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Values / U.S. Coins / Quarters / Washington Quarters, Special Mint Set (1964–1967) / 1966 Washington Quarters, Special Mint Set

The Greysheet Catalog (GSID) of the Washington Quarters, Special Mint Set (1964–1967) series of Quarters in the U.S. Coins contains 3 distinct entries with CPG® values between $1.00 and $4,000.00. Washington quarters struck with special finishes for collectors and generally not intended for circulation. The 1964

The Greysheet Catalog (GSID) of the Washington Quarters, Special Mint Set (1964–1967) series of Quarters in the U.S. Coins contains 3 distinct entries with CPG® values between $1.00 and $4,000.00.

Washington quarters struck with special finishes for collectors and generally not intended for circulation. The 1964 Special Mint Set (SMS) issue was experimental and extremely rare.

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1966 25c Special Mint Set SMS
Value Range: $1.00 - $35.00
$1.00 - $35.00
1966 25c Special Mint Set SMS CAM
Value Range: $15.00 - $600
$15.00 - $600
1966 25c Special Mint Set SMS DCAM
Value Range: $400 - $4,000
$400 - $4,000

Available on Greysheet Marketplace

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1926-S 25c MS

Auction Ends: 8/31/2026

1966 25c MS

Auction Ends: 8/31/2026

1891-O 25c MS

Buy Now: $825.00

1919-S 25c MS FH

Auction Ends: 9/2/2026

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