For information ... there are two interesting exhibitions coming up in England this autumn, that will likely include ethnographic weapons :-
The Sainsbury Centre for Visual Arts, Norwich
"Fiji : Art & Life in the Pacific"
15.10.16 to 12.2.17 See
www.scva.ac.uk
British Museum, London
"South Africa, the art of a nation"
27.10.16 to 26.2.17 See
www.britishmuseum.org