Sear Greek Coins and their Values (SG) Number sg3639
Pontos, Amisos AE23. Late 2nd to early 1st century BC. Helmeted head of Perseus right, wearing Phrygian helmet / AMIΣOY, Pegasus drinking or grazing left. Monogram(s) below.
To see the monograms on this issue, listed by Malloy, please see link to the scan on the wildwinds Amisos page