DIOCLETIAN, A.D. 284-305. BI Antoninianus (4.35 gms), Cyzicus Mint, 3rd Officina, A.D. 291. NGC MS, Strike: 5/5 Surface: 4/5. Silvering.RIC-306 var. (bust type). Obverse: Radiate, draped, and cuirassed bust right; Reverse: Diocletian, holding scepter, standing right, receiving victoriola from Jupiter standing left, holding scepter; Γ//XXI∙ An exceptionally well centered and struck example, with bold features on each side. A good deal of the silver wash still remains and yields some luster.