Attalos I, king of Pergamon, AR tetradrachm, 241-197 BC. 17.04 g.

Laureate head of Philetairos right.
FILETAIROY, Athena seated left on throne, holding wreath and 
spear, shield decorated with a gorgoneion beside the throne.
Monogram in outer left field, ivy leaf in inner left field, 
bow in outer right field.

Westermark Gruppe IVA, V XXXIII.

With permission of numislanz.de, Auktion 102, lot 259