This is one fragment with one polished finished rounded surface, of which one edge flares and curves.
From Nubia (Sudan) Gebel Barkal, B900 Ex.1 debris. 1919: excavated by the Harvard University-Museum of Fine Arts Expedition; assigned to the MFA by the government of Sudan.
Harvard University—Boston Museum of Fine Arts Expedition
Egyptian, New Kingdom, Dynasty 18, reign of Amenhotep III (?), 1390–1352 B.C.