Bill and Gene: Thanks for the helpful ideas and the source of materials graded by thickness.
Steve: The market is getting crazy. Seems as though there could be a few people quietly watching this Forum and getting a handle on what is worth collecting. I've noticed prices have climbed 100% or more in the last few years on stuff that virtually nobody used to bid on. Look at the Bagobo swords, for example. Just a couple of years ago, these often went for $100-120, now you can't get near a halfway decent one for less $200. There was an old Visayan talibon (gareb?) that went for big bucks this weekend too.