Hi Barry and Tim,
Many thanks for your replies and interest. From what I can find I'm almost 100% sure this is from P.N.G. This website should be of interest although you probably have seen it already
http://www.tribalartbrokers.net/prai...-clubs-of-png/
The wooden 'fishing' spearhead 25 inches long, see attached image, came with the club.
My Regards,
Norman.