Watch List notes:

Probus, 276-282. Antoninianus (Billon, 22 mm, 3.88 g, 1 h), Siscia, 277. IMP C M AVR PROBVS P F AVG Radiate bust of Probus to left, wearing consular robes and holding eagle-tipped scepter. Rev. VIRTVS PROBI AVG / XXIVΔ Mars advancing right, holding trophy and transverse spear. RIC 810. Attractive, toned over original silvering. extremely fine.