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David SeabornI have silently tracked the sale of every pre-1916 card slabbed by on of the big three grading companies for three years now. This includes all eBay auctions and all major auction houses. It is close to a full time job, but it can (and is) being done. Trends can be made, even analysis of prices between grading companies for the same card. We'll be doing much more with these data in the future. Needless to say, SMR is way off on most issues. Robert - send me an email. Dave