Two collectible stamps of Greece, large heads of Hermes, period 1870-1876, in 30 cents and 60 cents, uncancelled, the 60 cents with a trace of a flowerpot. Rare stamps with the 60 cent stamp having the stamp on the back of one of the leading Greek stamp engravers, MICHALIS OIKONOMIDES, with the initials M.O., with very nice margins without creases or soiling. Michalis Oikonomidis, one of the most emblematic creators of Greek stamps, has been awarded and honored, leaving his mark on Greek philhellenism.Hermes Hellas catalog 2019 750€