Watch List notes:

BITHYNIA. Nicomedia. Valerian I, with Gallienus and Valerian II Caesar, 253-260. Tetrassarion (Orichalcum, 26 mm, 11.59 g, 1 h), 256-258. AYT OYAΛEPIANOC ΓAΛΛHNOC (sic!) OYAΛEPIANOC Laureate, draped and cuirassed busts of Valerian I and Gallienus facing one another; below and between them, bareheaded, draped and cuirassed bust of Valerian II to right. Rev. NIKOMHΔEΩN - TPIC NEΩKO/PΩN Two temples, with serpent and altar between; above, another temple with standing Demeter within. BMC 68. RG 407. SNG von Aulock 7141. A rare and attractive dynastic issue with a lovely green patina. Very fine.