Proof Professional

How much are professional photo proofs and negatives from superbowls and word series games?

I have two sets from superbowl xxvii, including about 40 photos of michael jackson’s half time show. I also have a set from the 1992 world series. All professional proofs and negatives. How much are they worth??
Photographers were: andy bernstein, ron vesely and something pillington

Probably nothing, unless they were taken by a very famous photographer.

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