Larissa Cremaste, Thessaly, ca. 302-286 BC. AE Chalkous, 14mm, 1.75g. 

Head of nymph left. 
LARI, Harpa within olive wreath. 

BCD Thessaly 405.1; Rogers 319; BMC 4-5. 
Green patina. Rare. VF 

courtesy of London Ancient Coins on deamoneta.com, Jun, 2012