Pergamum, Attalus I. Tetradrachm; Pergamum, Attalus I; 241-197 BC, Tetradrachm, 16.80g. Westermark-V.II. Obv: Head of Philetairos r., wearing diadem with long ties, one rising, the other falling and visible below his neck. Rx: FI?ETAIPOY downwards on r., Athena wearing crested helmet seated l. on throne, extending her r. arm to hold top of shield ornamented with gorgoneion before her, and holding transverse spear with l. arm; a sphinx serves as armrest below her l. elbow, and the seat of her throne is marked with AT monogram; in exergue, ivy leaf; bow in r. field.. VF