Watch List notes:

Probus (276-282). BI Antoninianus, Siscia mint. Obv. IMP C M AVR PROBVS AVG. Radiate and draped bust right. Rev. CONCORD MILIT. Emperor standing right, clasping hand of Concordia; between them, T; in exergue, XXI. RIC 651. BI. g. 3.89 mm. 22.00 Partially silvered, with reddish highlights. About EF.