Ankh- also known as key of life, the key of the Nile or crux ansata (Latin meaning "cross with a handle"), was the ancient Egyptian hieroglyphic character that read "life", a triliteral sign for the consonants. It represents the concept of eternal life.
(National Geographic News) Chest of Tutankhamun. In the shape of a cartouche, this gilded wood chest from King Tutankhamun's tomb is inlaid with ivory, ebony, and various colored pastes. A cartouche is an oval figure enclosing a sovereign's name.
Only Kings, Queens and Gods were allowed to carry this symbol. The ankh is the Egyptian sign of life and indicates that the King or God holding it has the power to give life or take it away from lesser mortals