Nicomedia mint, A.D. 321-324
Obv: IMP C FL VAL CONSTANTINVS P F AVG
Rev: IOVI CONS-ERVATORI - Jupiter, leaning on eagle-tipped scepter, holding Victory on globe; eagle with wreath at feet to right, captive to left
SMNB in exergue; X over IIM (truncated) in right field
19 mm, 2.7 g.