William Jung began working for the American Banknote Company in 1912.
He produced engravings for banknotes of Brazil, Canada, China, Costa Rica, El Salvador, the Federal Republic of Germany (*), Greece, Guatemala, Iran, Nicaragua, Paraguay, and Poland, as well as for many bonds, stocks, and other securities.
For Türkiye, he produced the engraving of the Fountain of Ahmed III on the reverse side of the 4th emission 10 Lira banknote issued in 1948 (*1).
