Rare Diocletian's antoninianus from the Tripolis mint with XXI and palm branch on the right.
Roman Imperial
Diocletian (284-305), Antoninianus 285, Tripolis mint
Obverse: radiate bust right
IMP C C VAL DIOCLETIANVS P F AVG
Reverse: Jupiter standing right, holding globe and scepter, facing Hercules standing facing, head left, holding Victory on globe and club, TR between, XXI (palm) in exerque
IOV ET HERCV CONSER AVGG
Diameter 21 mm, weight 3.06 g