Now I have spent a bit more time looking.  I am not so sure about this being cleaned.  I was a little concerned that brass knobs were missing.  On checking weapons with missing brass knobs I think this club is a nice buy.  As for the rings I have always thought they could be seen over much of central to south Africa. I think it could be Shona or there abouts maybe not as north as Mangbetu.   Eye eye whats all this then.