One worked, curved surface. Large fragment of highly polished granite sculpture. Likely part of coil of snake. See 20-1-225 and 21.11700.
From Nubia (Sudan) Gebel Barkal, B501 V-5 debris. 1920: 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