This is a very rare Four Star set of Arno Hopp scrimshaw of the African Big 5.  Although not sold as a set, each knife is a Unikate by Arno Hopp who did most of the custom scrimshaw work for Puma beginning in the 1970s.  In an interview, Herr Hopp explained that each knife took about two weeks to complete. As each knife is sold individually, it is an extremely hard set to put together some 30 years after the work was done.