Lesbos. Unattributed Koinon mint. Circa 510-480 BC. Billon Stater, 20 mm, 11.07 g.

Confronted heads of two calves, olive tree between them.
Small incuse square punch. 

SNG Cop. 285; Hoover HGC 1076; Rosen 540; SNG von Aulock 1682.

With permission of Leu Numismatik AG - Auction 14, Lot 89, Oct. 2023.
Ex Künker auction 133, 11 October 2007, lot 8148 and Leu auction 72, 12 May 1998, lot 245.