1915-S 50C Panama-Pacific<br>(1181-6565)
US Mint (coin), Heritage Auctions (image)
Heritage Auctions <a rel="nofollow" class="external text" href="https://coins.ha.com/itm/commemorative-silver/classic-commemoratives/1915-s-50c-panama-pacific-ms67-pcgs-fs-502/a/1181-6565.s">Lot 6565</a>, 11 January 2013