Watch List notes:

Valerian II, Caesar, 256-258. Antoninianus (Silver, 22 mm, 4.54 g, 6 h), Cologne, 257-258. VALERIANVS CAES Radiate and draped bust of Valerian II to right, seen from behind. Rev. PIETAS AVGG Sacfificial implements. MIR 908e. RIC 4 ('Lugdunum'). Rare, only 9 specimens known to Göbl. Struck on a full flan and with a splendid portrait. About extremely fine.