Watch List notes:

Probus, 276-282. Antoninianus (Bronze, 22 mm, 2.69 g, 1 h), Siscia, 277. IMP C M AVR PROBVS P F AVG Radiate, draped and cuirassed bust of Probus to right, holding pugio in his left hand. Rev. CONCORD MILIT / [Γ] / X[XI] Probus, on the left, and Concordia, on the right, clasping their right hands. Cohen -. Gysen 1509. RIC - (cf. 651 for differing bust type). Very rare. The reverse somewhat smoothed, otherwise, about very fine.