The GreatCollections Coin and Paper Money Glossary


This is a popular resource that explains hundreds of coin related terms, as well as terms relating to our coin auctions. Of course, if you have questions about anything, please do not hesitate to contact us.

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Prefix


In numismatic grading, a prefix refers to a letter or series of letters that precede the numerical grade of a coin. In coin grading, "MS" (Mint State) indicates a coin is uncirculated, such as an "MS-70" coin is in perfect condition. Another prefix, "PR" or "PF" (Proof), signifies a coin struck with a unique coin die. Specimens, which are struck for special purposes are designated on certified coins as SP, ie. SP-69 or SP-70.

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