An aegis is a broad collar topped by the head of a deity, in this case the god Amen-Ra in the form of a ram crowned with a solar disk and uraeus. Amulets of this type were intended to offer protection to the wearer and avert potential dangers. On the reverse is a debased hieroglyphic inscription.
From el-Kurru: pyramid 53 (tomb of Queen Tabiry). 1919: Excavated by the Harvard University–Boston Museum of Fine Arts Expedition; assigned to the MFA in the division of finds by the government of Sudan. (Accession date: January 1, 1924)
Harvard University—Boston Museum of Fine Arts Expedition