Bronze nummus of Constantius I Chlorus

Obv.: Bust of Constantius II, draped and cuirassed to r., wearing a rosette diadem. Rev.: FELICITAS REI PVBLICE around the border and within wreath; VOT XV MVLT XX...

High tin bronze, an alloy popular in Iran from the pre-Islamic era up to the 11th century, is also called "white bronze" because of its resemblance to silver when new, and "bell me...