What is a lamination error on a coin?

Definition: Lamination errors are planchet errors in which the surface of a coin cracks and flakes . It is generally believed that lamination errors are caused by contaminants in the alloy that cause the metal to separate along the horizontal plane. Lamination errors can develop before or after the strike.

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What is a bag mark on a coin?

A-”Bag marks” are small nicks and smudges on an uncirculated silver dollar (or other coin type) caused when one dollar hits another, either during the minting process or in the bags used to ship coins to banks. Such imperfections are more common on larger, heavier coins.

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