The Molossi, Epirus, AR dobol. ca 400-350 BC. 10 mm, 0.97 g.

No legend, Molossan hound crouching right.
M-OL, thunderbolt.

Imhoof MG 41 (this coin); Traite II-4, 322 corr (L omitted); Berlin 18214451.

Image copied from Imhoof.