I got this argenteus from the recent Leu web auction 5. Constantius I, 293-306 18 mm. 2.87 grams. Struck as Caesar. CONSTANTI-VS CAESAR PROVIDEN-TIAE AVGG, four sacrificing HΓ RIC Heraclea 9, "r5, c. 296" What a portrait! For the basic information about this silver denomination, see my page http://augustuscoins.com/ed/argenteus/ This coin is at this spot on the page: http://augustuscoins.com/ed/argenteus/index.html#PA