Looks at first glance to be presenting the goddesses Wadjet and Nekhbet, the symbols of Upper and Lower Egypt, standing on either side of Osiris. However, the hieroglyphic inscriptions beside them state that they are in fact Isis (next to the vulture) and Nephthys (next to the cobra).
Goddess Isis wears the White Crown of Upper Egypt, here associated with two feathers, making it reminiscent of the atef-crown, while Goddess Nephthys wears the Red Crown of Lower Egypt. Between their wings can be seen the shen-symbol of infinity. A cavetto cornice is at the top of the pectoral, with a long row of uraei below. Made out of gold and inlaid with lapis lazuli, carnelian and colored glass.
From the Tomb of Tutankhamun (KV62). Valley of the Kings, West Thebes. Now in the Egyptian Museum, Cairo. JE 61946