Reverse of a 1776 <a href="https://en.wikipedia.org/wiki/Continental_currency" class="extiw" title="w:Continental currency">Continental currency</a> coin replica.  Versions were made from silver, brass, and pewter.  The denomination is unknown, and may have varied by the metal used, though (especially for the silver version) it is thought that it was a Spanish dollar coin.  The design came from an earlier Continental currency note, which was made by <a href="https://en.wikipedia.org/wiki/Benjamin_Franklin" class="extiw" title="w:Benjamin Franklin">Benjamin Franklin</a>.  For more information, see <a rel="nofollow" class="external text" href="http://www.coins.nd.edu/ColCoin/ColCoinIntros/CC-Dollar.intro.html">here</a> or <a rel="nofollow" class="external text" href="https://www.usmint.gov/KIDS/coinNews/coinOfTheMonth/2002/07.cfm">here</a>.
Benjamin Franklin (original design)
1776
Extracted from PDF version of <a rel="nofollow" class="external text" href="http://diplomacy.state.gov/exhibitions/100935.htm">Seals and Symbols in the American Colonies</a> poster, part of a U.S. Diplomacy Center (State Department) exhibition on the 225th anniversary of the Great Seal.  Direct PDF URL <a rel="nofollow" class="external autonumber" href="http://diplomacy.state.gov/documents/organization/101209.pdf">[1]</a> (21MB)