Watch List notes:

Probus, 276-282. Antoninianus (Billon, 23 mm, 3.65 g, 11 h), Rome, 276. IMP C M AVR PROBVS AVG Radiate and cuirassed bust of Probus to right. Rev. SALVS AVG / XXIΔ Salus standing facing, head left, feeding from patera held in right hand serpent arising from altar at feet to left, holding long scepter in left. Pink VI/1, p. 42, 1. RIC 744 (Siscia). Silvering over brown patina. Very fine.