Kongo-Yombe Mask, Democratic Republic of the Congo

the number '626' painted on interior rim; with old labels on reverse including: a round Mathias Komor Works of Art sticker inscribed "M3[?]4 / Loango"; two labels typewritten with "KONGO / Pl-7" and "CATALOG NO. 135"; and two other stickers with "135" and "433".

Mathias Komor, New York
Ruth and Paul Tishman, New York
Pace Gallery, New York
William Brill, New York, acquired from the above on February 27, 1976
Sotheby's, New York, The William W. Brill collects ion of African Art, November 17, 2006, lot 80
Jan Krugier, Monaco, acquired at the above auction

Musée de l’Homme, Paris, Arts connus et arts méconnus de l'Afrique noire: collects ion Paul Tishman, 1966
The Israel Museum, Jerusalem, Masterpieces of African Art: The Tishman collects ion, Spring-Summer, 1967
Los Angeles County Museum of Art, Los Angeles, Sculpture of Black Africa: The Paul Tishman collects ion, October 16, 1968 - January 5, 1969; additional venues: 
The High Museum of Art, Atlanta
Virginia Museum, Richmond, August 31 - November 12, 1970
College of Replica Handbags s, University of Texas, Austin
University of Illinois, Champaign
City Art Museum of Saint Louis, August 20- October 17, 1971
Des Moines Art Center, Des Moines

Musée de l'Homme, Arts connus et arts méconnus de l'Afrique noire: collects ion Paul Tishman, Paris, 1966, unpaginated, cat. 98
The Israel Museum, Masterpieces of African Art, Tishman collects ion, Jerusalem, 1967, p. 19, cat. 201
Los Angeles County Museum of Art, Sculptures of Black Africa: the Paul Tishman collects ion, Los Angeles, 1968, p. 124, cat. 135
Werner Gillon, collects ing African Art, London, 1979, pp. 100-101, fig. 122
Studio Vista, Promotional Leaflet for the book collects ing African Art, London, 1979
Raoul Lehuard, "La collects ion William Brill", Arts d'Afrique Noire, No. 26, Arnouville, 1978, p. 21
Raoul Lehuard, Art Bakongo: Les Masques, Arnouville, 1993, p. 750