Krannon, Thessaly, AE19 dichalkon, ca 350-300 BC. 5.19 g.

Laureate head of Poseidon or Zeus right.
KR-[A]-N clockwise from upper left, rider, wearing chlamys 
and petasos on horseback rearing right, trident right in 
exergue. 

BCD Thessaly II 117.1. 

With permission of cngcoins.com, BCD collection sale,
Auction 338. From the BCD Collection.
Estimate: $100