Rare books from Charles Schink

This rare and beautiful two volume set comes complete with 12 large plates illustrating the Bushman / San rock art in the Brandberg area of South Africa. I purchased these volumes in London while studying rock art in the area in the 90's. I am a private individual (not a book reselling company) with special attachment to this work. I have kept good care of these volumes which show only minor scuffing on the covers..... otherwise the work is in excellent condition. The work is written in English.