Earlier this month the Colin Sayers collection of African art was auctioned by Stephan Welz & Co. in Cape Town. You can read a tribute to the man here. The above Luba bowl bearer was the top lot of the sale and sold for € 18,000 (including premium). Most likely it was carved by by Kitwa Biseke, official carver to the Nkulu chieftainship (Mwanzi region). Many mboko from this workshop are known, but this one was a new addition to the corpus. More info can be found in an article by A. Nettleton: Burton’s Luba Mboko: Reflections of Reality, The Collection of WFP Burton (University of the Witwatersrand Art Galleries, Johannesburg, 1992, pp 51-67).
Below another mboko from this workshop published in African Fetishes and Ancestral Objects, together with a field-photo of the carver in action by Burton – click on the picture to zoom.