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<p>[QUOTE=&quot;TheFinn, post: 2869368, member: 90102&quot;]I am a chemist too, and those specs are way outside of precise. If you go to this wikipedia site you can see the original specs from the Coinage Act of 1792, then follow the other links for other denominations that were added or changed.&nbsp; Most of the weights were done in grains, which is the smallest unit they could measure with any precision.&nbsp; Hope that helps.[/QUOTE]</p><p><br /></p>

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