| Every year, the US Mint produces a set of "proof" coins for collectors. These are never released into circulation. |
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1955 |
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Population: 378,200
The US Mint released these in a box and in a flat pack. |
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1957 |
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Population: 1,275,000 |
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1959 |
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Population: 1,150,000 |
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1960 |
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Population: 1,700,000 |
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1961 |
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Population: 3,000,000 |
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1962 |
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Population 3,200,000 |
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1963 |
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Population 3,000,000 |
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1964 |
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No proof sets were made from 1965-1967. The US Mint produced Special Mint Sets during that time. |
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1968 |
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No proof sets were made from 1965-1967. The US Mint produced Special Mint Sets during that time. |
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