This is a circular lid (or, less likely, a token) shaped from a fragment of a redware pottery vessel that has fired black in some areas. It has been well formed into a disc shape. It may have been used for an offering/model vessel.
From Kerma, Cemetery S, Tumulus X B (corridor). 1914: excavated by the Harvard University–Boston Museum of Fine Arts Expedition; assigned to the MFA in the division of finds by the government of the Sudan. (Accession Date: September 19, 2006)
Harvard University–Boston Museum of Fine Arts Expedition