This is the base and feet of an Osiris statue and is part of the same statue, but does not join 16-3-27, the torso from neck to knees. See Related for parts of whole.
From Nubia (Sudan) Gebel Barkal, between 520 and circ. well B-1000. 1916: 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