Watch List notes:

Probus (276-282). BI Antoninianus, Rome mint. Obv. PROBVS PF AVG. Radiate and cuirassed bust right. Rev. ADVENTVS AVG. Emperor riding left, hand raised, holding sceptre; at foot, captive; in exergue, R thunderbolt Z. RIC V 158 var.. BI. 3.73 g. 22.00 mm. R. Rare variant, unlisted in RIC. Superb, fully silvered and prettily toned. EF.