Perinthos, Thrace, Roman times. AE22. 

Obv: Busts of Serapis and Isis, jugate, right; Serapis wears 
modius, Isis wears headdress of horns, globes and plumes
Rev: PERINQIWN, the bull Apis standing right with disk 
between horns.

Hunter p. 399, 2.

Ancient coin Art 2003. Found in an orphaned folder and
added June 2010.