Lampsakos, Mysia, AR (or low content electrum) obol or 1/24th stater. 8 mm, 0.64 g. 

Head of horse left.
irregular quadripartite incuse.

SNG Cop 593 ( "AR obol", Maronea, Thrace); Lambros 1897; Morkholm 1 in SNR 1971.

With permission of Leu Numismatik auction 7, Lot 1282, Oct. 2020.