Thyrrheium, Acarnania. Ca. 350-250 BC. AR stater 23mm, 8.45 g. 

Pegasus flying left; Q below.
Helmeted head of Athena left, Q under neck, Boeotian shield
behind head. 

Calciati, Pegasi 16; Imhoof Akarnanien 17

With permission of Numismatik Lanz München, Auction 155, Lot 
145, Dec 2012.