Watch List notes:

BITHYNIA. Claudiopolis (as Bithynium). Gallienus, 253-268. (Bronze, 25 mm, 8.52 g, 7 h). ΠOY ΛIK ΓAΛΛHNOC CEB Laureate, draped and cuirassed bust of Gallienus to right. Rev. BIΘYNIEΩN AΔPIANΩN Zeus seated left, holding patera and scepter. BMC 20. RG 71. SNG von Aulock 343. Green-brown patina. Flan a little tight, otherwise, good very fine.

From the collection of W. F. Stoecklin, Amriswil, Switzerland, acquired from Münzen und Medaillen in Basel prior to 1975.