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<p>[QUOTE=&quot;CheetahCats, post: 868812, member: 23874&quot;]Here are the specs that I was able to dig-up online.&nbsp; I do not have any of my books handy - I&#039;m at an internet cafe tonight:</p><p><br /></p><p><u>MATRON HEAD&nbsp; Variety, 1816 - 1835</u></p><p>Designer: Robert Scot</p><p>Diameter:&nbsp; 28-29 mm or 1-1/8&quot;</p><p>&nbsp;Weight: 10.89 grams or 168 grains</p><p><br /></p><p><u>YOUNG HEAD Variety, 1835 - 1857</u></p><p>Designer: Christian Gobrecht</p><p>Diameter:&nbsp; 27.5 mm</p><p>Weight: 10.89 grams or 168 grains</p><p><br /></p><p>That said, perhaps guidance from someone about what known variances were for weight for those series would be helpful?[/QUOTE]</p><p><br /></p>

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