Pharsalos AR hemiobol, late 5th-mid 4th century BC. 9mm, 0.48 g. 

Helmeted head of Athena right.
Φ at upper right of head and neck of horse right in incuse square. 

Lavva 37a–40; BCD Thessaly 1281; Hoover HGC 643.

With permission of Nomos AG obolos 6, lot 382, Nov. 2016.