This is a fragment of semi-cylindrical object: flat back, perhaps from object similar to 25-12-640. It has incised line from side to side at one end.
From Egypt, Giza, St. 7000 in debris on floor. 1926 : 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