Watch List notes:

ROMAN EMPIRE: Diocletian, AE Antoninianus, AD 284-305 (22mm, 4.1g). Mint: Cyzicus. Obverse: IMP C C VAL DIOCLETIANVS AVG; radiate, draped and cuirassed bust right. Reverse: CONCORDIA MILITVM, Diocletian standing right, holding short sceptre, receiving Victory on globe from Jupiter, standing with sceptre, A beneath. Nice example with even black patina. RIC 306. EF.