Watch List notes:

Probus. A.D. 276-282. AE antoninianus (23.72 mm, 4.63 g, 6 h). Siscia mint, struck A.D. 280. IMP C PROBVS AVG, radiate bust left, wearing imperial mantle, and holding eagle-tipped scepter / VIRTVS PROBI AVG, Mars advancing right, holding spear and trophy; S in right field, XXI in exergue. RIC 814. VF.