What Is Post-Mint Damage (PMD) on Coins? How to Identify It
What Is Post-Mint Damage (PMD) on Coins? Post-mint damage (PMD) is any damage or alteration that occurs to a coin after it leaves the mint. This damage can happen during circulation, improper storage, handling, or intentional attempts to modify a coin. Common examples of post-mint damage include scratches, dents, bent edges, corrosion, chemical damage, and unusual discoloration. These imperfections are not part of the original minting process and can affect a coin's appearance and collectible value. How Does Post-Mint Damage Affect Coin Value? Post-mint damage can significantly reduce the value of a coin, particularly when compared with an undamaged example of the same date, mint mark, and grade. Coin collectors generally prefer coins with original surfaces and minimal damage. Understanding the difference between post-mint damage and genuine mint errors is especially important for coin collectors. A damaged coin is not automatically a rare error coin, and alterations made after m...
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