Watch List notes:

Probus, 276-282. Antoninianus (Billon, 24 mm, 3.72 g, 12 h), Ticinum, 6th officina (S), 279. IMP C PROBVS AVG Radiate, draped and cuirassed bust of Probus to right. Rev. SECVRIT PERP / SXXI Securitas standing facing, head left, legs crossed, leaning on column. Pink VI/1 p. 65. RIC 573. Excellent centering, brown patina. Very fine.
From a Dutch collection.