Watch List notes:

BITHYNIA, Nicomedia. Valerian I, with Gallienus and Valerian II Caesar. AD 253-260. Æ (25mm, 9.13 g, 1.5h). Struck AD 256-258. AVT OVAΛEPIANOC ΓAΛΛHNOC OVAΛEPIANOC ·/ KAICA/ BB-B, radiate busts of Valerian I and Gallienus face to face; below and between them, bust of Valerian II to right / NIKOM-HΔEΩ, TPIC NEOKO/PΩN in exergue, two temples, with serpent and altar between; above, another temple with standing Demeter within. Cf. RG 408; cf. SNG von Aulock 860; NAC 100, lot 1201 (same obv. die). Good VF, brown patina. Rare.

Ex Classical Numismatic Auctions XIV (20 March 1991), lot 587.