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<p>[QUOTE=&quot;dltsrq, post: 2245033, member: 75482&quot;]I have a thought. It may or may not be correct. I haven&#039;t had my coffee yet.</p><p><br /></p><p>If a letter is cut (engraved) into the die, the excess metal ends up on the shop floor. Letters are also sometimes formed with punches. When a punch is used, metal is not taken away, only moved, forming a sort of mound around the edge of the shape which has been impressed into the die. When the die is used to strike the coin, the letter, which is negative in the die, is raised above the field of the coin while the &quot;mound&quot;, which is positive in the die, presses into the flan, leaving a depression around the edge of the letter.[/QUOTE]</p><p><br /></p>

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