Roman Imperial
Diocletian (284-305), Antoninianus 293-295, Antioch mint
Obverse: radiate bust right
IMP C C VAL DIOCLETIANVS P F AVG
Reverse: Jupiter standing left, holding thunderbolt and sceptre, I between, XXI in exergue
CONCORDIA MILITVM
Diameter 21 mm, weight 3.92 g