This is a 3D model of a copy of "The Mask of Agamemnon". The copy is displayed at the Ashmoleon Museum in Oxford, but the original artifact is on display at the National Archaeological Museum of Athens.
The "Mask of Agamemnon" is a golden funeral mask which was found in 1876 in one of the royal shaft graves at Mycenae during the excavations run by Heinrich Schliemann.
Dating: Bronze Age, c. 1600 BC