Posted By:
RobertRarest and most expensive are totally different measures, there are a lot of cards that there are only one known example of in existence. Tango Eggs for example:
Bresnahan- 4 known
Cobb-1 known
Crawfod-4 known
Evers-1 known
And the same goes for many other sets. And we will never know the true value of these rare cards until the ownersdecides to sell them.