Watch List notes:

Valerian II. Caesar, AD 256-258. AR Antoninianus (23mm, 4.28 g, 5h). Samosata mint. 1st emission, AD 255-256. Radiate, draped, and cuirassed bust right / Valerian standing facing, head left, crowning trophy and holding spear and shield. RIC V 49; MIR 36, 1694b; RSC 67a. Good VF, flan crack, surfaces a little rough.