Posted By:
leon"2) maybe these wonderful little pieces of cardboard history aren't nearly as rare or scarce as we like to think they are!"
The other way of looking at that is to realize that, as an addicted internet savvy collector, when we do see something we have never seen before, or very rarely see, then it proves they are as scarce as what we believe they are 
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I bet what we see in one month during March and April (including all of the auctions and ebay and on-line websites) was more than some collectors saw in their entire lifetimes 40-50 yrs ago.....Which makes what Jeff Burdick did all the more amazing!!!!!