Diocletian, Kyzicos mint, 1st officina,
Æ-Antoninianus (21-22 mm / 3.55 g), 286 AD.,
Obv.: IMP CC VAL DIOCLETIANVS AVG , radiate, draped bust of Diocletian right, seen from behind.
Rev.: CONCORDIA MI-LITVM / A / XXI• , Diocletian standing right, holding parazonium, receiving Victory from Jupiter standing left with scepter. A in center field, XXI• in exe.
RIC V, pt. II, page 253, 306A ; C 33 .