Three metopes of the Sicyonian Treasury in Delphi decorated with the well-known mythological ship of the Argonaut campaign, the Argo, with the Argonauts. In the left metope, one of the Dioscuri can be seen on horseback in front of the Argo’s bow and righter there are two musicians holding a lyre. The bearded figure is identified with certainty with Orpheus since there is the inscription ΟΡΦΑΣ (Orpheus). The second musician is probably Philammon.

These three metopes belonged to the sculptural decoration of monopteros (building that has only one pteron, ie one colonnade) of 560 BC, which was later embedded in the Sicyonian Treasury (525 BC). In architecture as "Treasures" are characterized the buildings that were built by the Greek cities in great sanctuaries and there were kept the offerings to the gods or the precious objects of each city.