Kingdom of Pergamon, AE unit, struck under Attalos II, 
159-138 BC.

Obv: Helmeted head of Athena right
Rev: FILETAIROY, coiled serpent, head raised right.
M in left field.

BMC 78-80; Sear Greece 7228; SNG von Aulock 7455; SNG Stockholm 2093.

Used with permission of Trionfo-Jerusalem, Sept. 2012.