An illustration of a cash coin produced by Kingdom of Khotan from "Stein, A. (1907) Ancient Khotan, Oxford, Clarendon Press.".
Stein Márk Aurél
<a rel="nofollow" class="external text" href="http://www.charm.ru/coins/misc/hotanleadcoin.shtml">Khotan lead coin</a> (Charm.ru - Chinese Coinage Web Site)