Eresos, Lesbos, AE16 Dichalkon, 2 gr. 1st century BC. 

Obv: Head of a gorgoneion or Hermes facing, wings behind his head.
Rev: ERECIWN, winged caduceus. 

SNG von Aulock 1736; Hoover HGC -. 
VF, green patina. Perhaps the second known, and the 
only one in private hands (the von Aulock coin is in the British Museum). 

With permission of cngcoins,com, Oct. 2012.