Watch List notes:

Valerian I, 253-260. Antoninianus (Silver, 21 mm, 3.75 g, 7 h), Viminacium, 253-254. IMP VALERIANVS P AVG Radiate, draped and cuirassed bust of Valerian I to right, seen from behind. Rev. CONCOR LEGG Concordia seated left, holding patera in her right hand and double cornucopiae with her left. Cohen 44. MIR 804d. RIC 236 corr. ('Mediolanum'). Rare. Tiny flan flaw on the forehead, otherwise, extremely fine.