Numismatic Guaranty Company
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Professional Coin Grading Service
Flowing Hair dollar
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Peace dollar
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Twenty-cent piece (United States)
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Penny (Canadian coin)
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Quarter (Canadian coin)
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National Collector's Mint
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Presidential dollar coins
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Adolph Alexander Weinman
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James L. Halperin
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Coin grading
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50 State quarters
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Mint-made errors
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In God We Trust
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Japanese yen
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Rescue and recovery effort after the September 11 attacks on the World Trade Center
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Coin collecting
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