Elaea, Aeolis, AE19, semi-autonomous issue. ca 2nd Century AD. 19.5mm, 2.52 g. 

Laureate head of Poseidon right.
ELAITWN, Nike standing right on ship's prow, oval countermark with inverted T or Y or anchor below. 

Apparently unpublished. CNG 494, 311.

With permission of cngcoins.com, auction 494, Lot 311, June 2020

Not in BMC, SNG Cop, SNG Turkey (all volumes), Mionnet, SNG Munich, Yanik Thesis, Tekin (Elaia Coins in Bergama Museum); ANS etc.