Watch List notes:

Valerian I (253-260). AE 21 mm. Alexandria Troas mint (Troas). Obv. IMP LIC VALERIANVS A. Laureate and draped bust right. Rev. COL AVG. Horse grazing right; in exergue, TRO. Bellinger A436. AE. 3.82 g. 21.00 mm. Roughness on obverse. About EF.