Watch List notes:

PAPHLAGONIA, Sinope. Gallienus. AD 253-268. Æ (27.5mm, 8.57 g, 7h). Dated CY 340 (AD 270/1?). IMP C GA[LLIENV]S AVP Γ, laureate and draped bust right / C I F S ΛN CCC-X-V (date), Serapis reclining left on couch, holding eagle and scepter. Cf. RG 169 (CY 339); BMC –; SNG Cop –; SNG von Aulock –. Fine, green-brown surfaces. Extremely rare.

Ex Mūnz Zentrum 159 (4 May 2011), lot 303.

According to RG, the issues for years 339 and 340 would date to after the death of Gallienus in AD 268.