Trajan, AE26 of Byzantium, Thrace. 

AVT NEP TRAIANOC KAICAP CB GM DAKI, Laureate head right.
EPI NEIKHC TO D BYZANTIWN, crested Corinthian helmet left. 

Schönert-Geiss 1345; Varbanov 1641.

With kind permission of Numismatik Lanz, Auction 2003.