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<p>[QUOTE="Conder101, post: 4864235, member: 66"]Not in 1974.</p><p><br /></p><p>Thickness at the edge is more a function of striking pressure than anything else. A stronger strike allows for more complete filling of the edge and rim and thus a thicker edge. The two strikings at higher pressure is why the proof coins have such a thick squared off edge even though they start with planchets the same size and weight as the business strikes. That is why trying to judge the "thickness" of a business strike by looking at the edge doesn't really tell you anything. A thin planchet with a strong strike can be thicker than a normal or possibly even a thick planchet with a weaker strike.[/QUOTE]</p><p><br /></p>
[QUOTE="Conder101, post: 4864235, member: 66"]Not in 1974. Thickness at the edge is more a function of striking pressure than anything else. A stronger strike allows for more complete filling of the edge and rim and thus a thicker edge. The two strikings at higher pressure is why the proof coins have such a thick squared off edge even though they start with planchets the same size and weight as the business strikes. That is why trying to judge the "thickness" of a business strike by looking at the edge doesn't really tell you anything. A thin planchet with a strong strike can be thicker than a normal or possibly even a thick planchet with a weaker strike.[/QUOTE]
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