Krannon, Thessaly, AE17 dichalkon, ca 350-300 BC. 5.15 g.

Laureate head of Poseidon or Zeus right.
KRA-N clockwise from the top , rider, wearing chlamys and 
petasos on horseback rearing right. 

BCD Thessaly II 117.9. 

Contributed by Roma Numismatics, Sept. 2012.
Estimate: £150.