Pergamum, Mysia, AR Cistophoric tetradrachm. 166-67 BC. 27 mm, 12.66 g. 

Cista mystica, half-opened with a serpent emerging 
from it, surrounded by a wreath of ivy and vine leaves. 
Two serpents entwined around a bow in bowcase. PERG 
monogram to left, MH above, serpent-entwined thyrsos in right field.

Kleiner Pergamum 21; Kleiner, Asia Minor Hoard 1934, 121; SNG von Aulock 7469.

With permission of Nomos AG, Oct. 2015.