FIVE ROMAN BILLON AND COPPER ALLOY COINS OF DIOCLETIAN (RULED 284 - 305 CE) AND MAXIMIAN (INTERMITTENT, 286 - 310). comprising three issues of Diocletian: a billon antoninianus, and two copper alloy coins (28 and 23 mm.); and two coins of Maximian: silver antoninianus on a large planchet (about 24 mm.), and copper alloy (28 mm.) Estimate $100-200