All the big dealers said that stamps, coins & currency couldn't be independently graded yet it was done. At least a photo certificate could be issued as to whether it was genuine and in new or used condition. I think dealers are cool to this idea because the COAs they issue are subject to the whims of the seller. If they disagree with you about whether the item is authentic you are SOL. The same problems existed with fake coins & grading prior to the 1980s. Now coins are a billion dollar industry because of expertization. Currency & stamps soon followed. I think this would help the buyer & seller. The only hold-up is that the volume of trading might not justify the start-up costs in the beginning. But once it got off the ground - you could have a monthly list of buy-sell prices that everyone could use for tinnies to SA leader daggers.
