This is a two-sided, triangular, sunk relief fragment depicting on side A, among others, a raised cow's head, and on side B, a seated (woman's?) torso holding an ankh in the right hand.
From Giza, G 7440, debris IV in radim of pit. .1927: Excavated by the Harvard University–Boston 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
Egyptian, Old Kingdom,