Earliest known depiction of the famous 'Wooden Horse' of the Trojan War, on Mykonos Terracotta Vase (Pithos) - 670 BC, found at Mykonos island, Cyclades, Greece.
Neck of pithos shows descent of Greeks from wooden horse. His hooves rest upon little wheels, and in body and neck of horse are seven windows visible. Pithos was discovered in 1961, during digging of a well in one of houses in centre of town of Mykonos in Greece.
Mykonos Archaeological Museum