Gallienus, AE23 of Perinthus, Thrace. 11.66 g. AD 253-268. 

AVT GALLIHNOC CEBA, radiate, draped, and cuirassed bust right.
PERINQIWN DIC NEWKORWN, Galley sailing right, with billowing sail. 

Varbanov 597; Schönert-Geiss 912. 
Rare. 
Ex Simon Shipp Collection.
Estimate: $150.

With permission of cngcoins.com, Dec. 2013.