Watch List notes:

Valerian II, Caesar, 256-258. Antoninianus (Silver, 23 mm, 3.10 g, 12 h), Cologne, 257-258. VALERIANVS CAES Radiate and draped bust of Valerian II to right, seen from behind. Rev. IOVI CRESCENTI The young Jupiter seated facing, head left, raising hand, on goat right. Cohen 26. MIR 907e. RIC 3. Struck on a broad flan. Very fine.