Discussion in 'Error Coins' started by MatrixMP-9, Sep 18, 2019.
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@paddyman98 can...But it is not damage or from circulation.
"finned rim"? Ive never heard of that. I will look it up.
Definition: A fin is a thin flange that extends vertically from the rim/edge junction of a coin struck within the collar. It is caused by excessive striking pressure or a localized increase in striking pressure caused by slight die tilt. The extra pressure causes coin metal to squeeze into the narrow gap between die neck and collar. Fins can develop on either face or both faces simultaneously. A fin may encircle a coin or may be restricted to one pole. The latter is the kind typically produced by die tilt.
Read here as it tells that the hammer die can move during a strike.
That can cause the shadow date as a form of machine doubling.
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