Watch List notes:

Probus, 276-282. Antoninianus (Silvered bronze, 24 mm, 4.20 g, 7 h), Ticinum, 279. IMP C PROBVS AVG Radiate and cuirassed bust of Probus to right. Rev. SECVRIT PERP / ς XXI Securitas standing front, head to left, her legs crossed, placing her right hand on head and leaning her left elbow on column. Cohen 611. RIC 573. Minor roughness, otherwise, about extremely fine.