Mytilene, Lesbos, Electrum Hekte (Sixth Stater). 450-330 BC.  

Obv: Head of satyr or Silenos right.
Rev: Two rams' heads butting within incuse square.  

Bodenstedt 37; SNG Lockett 275; SNG von Aulock 1700; BMC 39-41; Sear Greece 4244.

Courtesy of TimeLine Auctions (www.timelineauctions.com), Feb, 2012