Leon Siroto suggests that all drums of this type falls into a short series, apparently by one unknown carver whose signature was a maskoid or perhaps a rendering of a beautiful woman´s face.
Siroto Leon : East of the Atlantic, West of the Congo. Art from Equatorial Africa. The Dwight and Blossom Strong Collection.
The Fine Arts Museum of San Francisco, 1995.
Djedje, Jacqueline Cogdell : Turn Up the Volume!: A Celebration of African Music. Fowler Museum of Cultural History 1999.