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<p>[QUOTE=&quot;Conder101, post: 3077544, member: 66&quot;]Thickness at the edge is at least partially a function of striking pressure.&nbsp; A rolled thin planchet struck a little better than normal will&nbsp; have a slightly thicker edge and will look the same as a regular thickness strike</p><p><br /></p><p><br /></p><p>The chart shows no examples of a silver coin being struck on SBA stock.&nbsp; It does show the possibility of an sba struck on silver quarter stock which is possible, but it also shows SBA on silver clad quarter stock which is not possible.</p><p><br /></p><p>The reason the actual half dollars struck on quarter stock don&#039;t match the chart is because the figures on the chart assumes quarter stock strip that would produce quarters at exactly the spec weight.&nbsp; But since quarters have a tolerance range weight, halves punched from quarter strip also have tolerances.&nbsp; If the strip would produce quarters that weighed at the minimum tolerance weight, a half dollar punched from that strip would weigh 8.66 grams.&nbsp; So the tolerance range for a half struck on quarter stock is 8.66 grams to 9.38 grams.&nbsp; The 8.79 coins shown are light but within the tolerance range.[/QUOTE]</p><p><br /></p>

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