MYSIA. Lampsacus. Gallienus, 253-268. Assarion (Bronze, 21 mm, 5.24 g, 7 h), Atresios, magistrate. AY K Π ΛIK ΓAΛΛIHN/OC Laureate, draped and cuirassed bust of Gallienus to right, seen from behind. Rev. ЄΠI AT[PЄ]/CIO/[Y - ΛANΨAKHNΩN] Poseidon, nude but for chlamys over his shoulders, standing left, his right foot set on prow, holding dolphin in his right hand and trident in his left. BMC -. Imhoof-Blumer KM -. Cf. Naumann 42 (2016), 435 (same obverse die, but with a differing reverse). SNG Copenhagen -. SNG Glasgow -. SNG Leypold -. SNG Righetti -. SNG Tübingen -. SNG von Aulock -. Winterthur -. Unpublished and unique. Very minor smoothing on the obverse, otherwise, extremely fine.