Watch List notes:

Gallienus, 253-268. Antoninianus (Billon, 21 mm, 4.06 g, 11 h), Mediolanum. GALLIENVS AVG Radiate head of Gallienus to right. Rev. FELICI AVG Felicitas standing left holding long caduceus and cornucopia. Cohen 181. RIC 187. Very rare variety without any mintmark. Nearly extremely fine.