Realistically, there can't possibly be many of these finds left. For decades now, even people who don't follow card collecting one thousandth as much as those here, would have brought an old shoebox full of cards to an auction house or card store. It has been known for some time that old cards can be very valuable, and local news channels have reported on these finds for years. So there is likely on a very small number of card treasures that haven't been uncovered yet. That said, any such find must be exciting, even life-changing, for those involved.
Many of you may remember this:
Million Dollar Boston Red Stockings Baseball Archive | Antiques Roadshow
https://youtu.be/wACD_Nl8o4E
1871 - 1872 Boston Red Stockings Archive
https://www.pbs.org/wgbh/roadshow/ap...kings-archive/