<div class="description">
Calculations written on U.S. Mint letterhead, approximating the value of gold and silver coinage of the United States.</div>
1882-Aug-24
This file was contributed to Wikimedia Commons by <a href="https://en.wikipedia.org/wiki/en:Science_History_Institute" class="extiw" title="w:en:Science History Institute"><span title="library, museum, and archive in Philadelphia, United States">Science History Institute</span></a> as part of a cooperation project. The donation was facilitated by the <a href="https://en.wikipedia.org/wiki/Digital_Public_Library_of_America" class="extiw" title="w:Digital Public Library of America">Digital Public Library of America</a>, via its partner PA Digital.<span style="text-align:left">
<ul><li><a rel="nofollow" class="external text" href="https://digital.sciencehistory.org/works/6682x432g">Record in source catalog</a></li>
<li>DPLA identifier: <a rel="nofollow" class="external text" href="https://dp.la/item/b6f53a3024c2013a00f45d5b30c8aeea">b6f53a3024c2013a00f45d5b30c8aeea</a></li>
<li>Science History Institute identifier: padig:SHI-6682x432g</li></ul></span>