Coin Highlights
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Date/Mint: 2006-S, San Francisco.
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Denomination: Quarter Dollar.
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Composition: 91.67% copper, 8.33% nickel overall.
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Strike: Proof.
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Weight: 5.67 grams.
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Diameter: 24.30 mm.
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Edge: Reeded.
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Mintage: 2,882,428.
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Obverse: George Washington by John Flanagan.
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Reverse: Rocky Mountains, evergreen trees, and “Colorful Colorado” banner.
Historical Significance
Colorado was the 38th state admitted to the Union, and this issue was the 38th coin in the 50 State Quarters Program. It was also the third quarter released in 2006, and its design highlights the mountain scenery most closely associated with the state’s identity.
Collectibility
The 2006-S Colorado clad proof is a strong choice for collectors building complete State Quarter proof sets, modern U.S. proof quarter runs, or Colorado-themed collections. Its mirrored proof finish, scenic reverse, and San Francisco proof format give it steady collector appeal, while the separate silver proof version offers a scarcer companion issue.
