Pergamon, Mysia, AE15 semi-autonomous issue. 1.7 g. AD 193-211.

Bearded and bare head of Herakles right. 
PERGAMHNWN, serpent-entwined tree with three branches. 

SNG Copenhagen 458; SNG Tuebingen 2464-2465.

With permission of Numismatik Naumann auction 77, Lot 413, May 2019