@samcarter -- I'd thought that Springbok had ceased to exist, but the actual story is more complicated. Found this website about their history:
springbok-puzzles.com/springbok-puzzles-history-s/1941.htm The trademark is no longer held by the original creators, and I haven't seen any recent ones. As for Ravensburger, the toy store around the corner from our house carries them, and they look luscious.