This club finished on ebay.
http://www.ebay.co.uk/itm/1706847312...84.m1423.l2649
Origin could be many places but could also be related to the clubs in this link.
http://digitalcommons.unl.edu/cgi/vi...lock%20Club%22
37cm long and 400g much the same as many knobkerry but lacking lever action. What I find intersting is that there does seem to be a tradition somewhere here? My example almost identical in form is 50cm long and 700g. Just curious!