Everything looks authentic to me (I believe the holograms are from Upper Deck). This was clearly the project of a very dedicated collector.
The cost of authenticating every single signature could very easily surpass $1,000, and could wind up being several times that. All the big names (DiMaggio, Ali, etc) cost extra.
I would not take it to an auction house for that reason. Try to sell it on here if you're so inclined.
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