Warrior (Pericles Figurine)

Unidentified small bronze statue (ca. 5 in. [12 cm.] high) from Pergamum. Note the archaic type helmet and the Greek hoplite’s spear. The image on the chest seems to be a "Gorgon," maybe a Medusa, to ward off evil/disaster. However, the skirt and the toga look Roman. Could this be a Hadrianic, second century A.D., "archaizing" figurine?