This is a small corner fragment of pillar behind cobra's hood, forming the lower back right corner 21.11699f. It is polished and flat on one face. See Documentation for possible Related Objects.
From Nubia (Sudan) Gebel Barkal, Great Temple of Amen, B 501, V-1; but originally from Soleb. January-February, 1920: excavated by the Harvard University-Museum of Fine Arts Expedition; 1921: assigned to the MFA by the government of the Sudan.
Harvard University—Boston Museum of Fine Arts Expedition