Bone (or ivory) harpoon with double barbed point.
From Mesaid. [tomb unknown, but probably on photo B968]. 1910: Excavated by the Harvard University–Museum of Fine Arts Expedition; assigned to the MFA by the government of Egypt. (Accession date: March 2, 1911)
Harvard University—Boston Museum of Fine Arts Expedition
Egyptian, Predynastic Period, Naqada I–III, 3850–2960 B.C.