This is a thin cylindical fragment, likely part of a vessel lid or base. The diameter would have been about 4.5 cm. It was not mentioned in the Object Register under 15-4-394.
From Egypt, Deir el-Bersha, Tomb 8, pit A, chamber Y debris. 1915: Excavated by the Harvard University-Museum of Fine Arts Expedition; assigned to the MFA by the government of Egypt.
Harvard University—Boston Museum of Fine Arts Expedition