This picture displays a golden death mask from the Mycenaean Age which many believe to be that of Agamemnon himself. I believe this picture portrays what may have been an important tradition of the time.
(Egypt) Gold Mask of Wenudjebauendjed, a powerful military leader, was buried with this Gold funerary mask in the pharaoh’s tomb alongside his master. dynasty reign of Psusennes. From Tanis, tomb of Psusennes. Gold The Egyptian Museum, Cairo