Size and Weight: 15 mm, 4.6 g, Features Zeus who eventually stabled Pegasus (the flying horse) and tasked him with drawing the chariot of his thunderbolts. Obverse The obverse features Pegasus, a winged horse, born from the liaison of the sea-god Poseidon and the beautiful Medusa. The liaison made the goddess Athena angry, and she cursed Medusa to be ugly and deadly. When she was killed, Pegasus sprang from her neck.