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Posted By: David Seaborn

I 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. I already have such a database. 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.

Robert and BlackSox - send me an email. Dave