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<p>[QUOTE="Conder101, post: 3473972, member: 66"]Well that mark had to be made post strike. You can see on the left edge of the mark how the metal has been pushed up higher than the field. If it was pre strike the edge would be no higher than the surrounding field and the mark would have pretty well have been wiped out completely by the strike.</p><p><br /></p><p>So what would the point be to doing a Rockwell hardness test on the coin after it has been struck? I might see a hardness strist pre strike to make sure the planchets had been annealed properly before they were sent to the press, but that typically isn't the case with the zinc cents anyway. You might do one on a die, but that would create a raised lump on the coin so the die wouldn't be used anyway. If you did a test on a die I don't think you would do it on the die face you would do it on the body of the die. Or in the case of a die blank pre hubbing you would do it toward the edge where it would be removed by the lathe post hubbing.[/QUOTE]</p><p><br /></p>
[QUOTE="Conder101, post: 3473972, member: 66"]Well that mark had to be made post strike. You can see on the left edge of the mark how the metal has been pushed up higher than the field. If it was pre strike the edge would be no higher than the surrounding field and the mark would have pretty well have been wiped out completely by the strike. So what would the point be to doing a Rockwell hardness test on the coin after it has been struck? I might see a hardness strist pre strike to make sure the planchets had been annealed properly before they were sent to the press, but that typically isn't the case with the zinc cents anyway. You might do one on a die, but that would create a raised lump on the coin so the die wouldn't be used anyway. If you did a test on a die I don't think you would do it on the die face you would do it on the body of the die. Or in the case of a die blank pre hubbing you would do it toward the edge where it would be removed by the lathe post hubbing.[/QUOTE]
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Rockwell test mark?
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