Sinope, Paphlagonia, AE30, 19 g. 105-85 BC. 

Helmeted head of Athena right.
SINW-PHS, Perseus standing left, holding harpa and head of Medusa, whose decapitated body lies at his feet.
ME monogram in left field. 

Sear SG 3707; SNG BM Black Sea 1534-1535; RecGen 61b.

With permission of Numismatik Naumann Auction 40, Lot 159, Feb 2016.

Note: RecGen lists 4 different monograms and one coin without monogram.