Hadrian, AE20 of Odessos, Thrace.

AYTOKRATwR ADRIANOC, laureate head right.
ODHCEITwN, emperor on horseback galloping right, chlamys 
flying out behind, brandishing spear in right hand.

Varbanov 3488; BMC 9; AMNG 2237; Paris 904; Bekov, Rusev 6 (this coin); RPC III 773.

Image courtesy of Vladimir Bekov and the Rusev Collection.