Watch List notes:

Diocletian, 284-305. Antoninianus (Billon, 22 mm, 3.58 g, 6 h), Siscia, 289-290. IMP C C VAL DIOCLETIANVS P F AVG Radiate and cuirassed bust of Diocletian to right. Rev. CONSERVATOR AVGG/XXIA•I• Diocletian and Jupiter standing facing one other, each holding scepter, and sacrificing over lighted altar between them. RIC 263. Considerable original silvering. Cleaning marks, otherwise, good very fine.