Mytilene, Lesbos. EL Hekte. Ca 377-326 BC. 11mm, 2.53 g.

Helmeted head of Athena right.
Owl standing right, head facing, within linear square. 

Bodenstedt 105; SNG Cop 315; Boston MFA 1745; Hoover HGC 1031; SNG von Aulock 1706.. 

with permission of Numismatik Naumann auction 77, lot 194, May 2019.