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<p>[QUOTE=&quot;Conder101, post: 218786, member: 66&quot;]Not correct.&nbsp; They are the first US coin, but not the first .9999 fine gold coin.</p><p><br /></p><p><br /></p><p>Don&#039;t trust the dimension shown earlier in the thread.&nbsp; Those figures have to be taken from measurements of the diameter and EDGE thickness of a finished coin.&nbsp; If you use the figures they give for the .9999 buffalos to determine volume and multiply it by the specific gravity of pure gold you come up with the coin weighing 46.8 grams or almost an oz and a half.</p><p><br /></p><p>If it is the edge thickness of the finished coins it also explains the apparent size difference.&nbsp; The softer .9999 fine coins strikes up more fully using the same pressure resulting in HIGHER rims and a thicker edge.&nbsp; The alloyed eagle is less malleable and so doesn&#039;t flow as readily and doesn&#039;t strike up the rims as thick.</p><p><br /></p><p>The alloy is NOT denser than the .9999 fine coins.&nbsp; Pure gold has a density of 18.88&nbsp; the 22KT eagles have a density of 17.45[/QUOTE]</p><p><br /></p>

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