The Greek god Hermes, messenger of the Gods in the Greek mythology, is the representation chosen, in 1860, by the Kingdom of Greece to illustrate its first postal stamps.
The first type, the "large Hermes head", was issued in October 1861, and stayed in circulation up to 1886, it was then replaced by the second type, the "small Hermes head".
The "large Hermes head" stamps, have been reissued, overprinted, in 1900 and 1901 in order to mitigate the delay of shipment of the stamps of the third type, the "flying Hermes" by the British printer J. P. Segg & Co.[1]
In 1902, a fourth type showing Hermes effigy was issued for international "metal payment".
Finally, in 1912, a fifth type showing various Hermes representations was issued and stayed in circulation up to 1926.
Starting early 1920s, the subjects used to illustrate the Greek postal stamps are becoming diversified and let down the Hermes effigy.