I think longer in the hobby and the more homework you do the better you can speculate. Lot of info can be learned,how long company was in business,what regions they were in states etc. No not like cars where one can find by vin.numbers yes this is special order one of one. Sorry petro just not that easy,education is your best friend,and yes I somewhat see your point but when I see something emerge that I knew was out there but I thought I would never see come to auction I get excited! Show me three of them in a year and I'm turning flips. Why because I've done my due homework. Your worry that buyers will play out-- well not in the near future.
Through educating myself I know when to get excited! It doesn't matter if its one in ten years,or a half dozen.