Very nice indeed.  I would say 60+ like this is far from a modest collection!!!! 

   I am adding illustrations from "Fijian Weapons & Warfare, Fergus Clunie"
You can see a great variety of handle decoration and I am sure this is not the definitive list.  A pole club is a basic design and world wide.  There is the possibility that it could come from other Polynesian Islands perhaps ruling out Samoa.  As I say very nice and I look forward to seeing and discussing more.  I have a staff/club coming in the next week and will and here even though it is Melanesian.