The exterior surfaces are textured. It is unclear if this was deliberate or a byproduct of use or the surface upon which it was fired.
From el-Kurru, Ku. 701. 1919: 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: August 23, 2006)
Harvard University—Boston Museum of Fine Arts Expedition