This is a spacer bead ? composed of two eyes (NOT Eyes of Horus) attached side-by-side on their long sides and each bored through the length. Both sides are identical. One eye is broken.
From Egypt, Giza, N of subsidiary pyramid G I-b. 1924: excavated by the Harvard University–Museum of Fine Arts Expedition; assigned to the MFA in the division of finds by the government of Egypt.
Harvard University—Boston Museum of Fine Arts Expedition