I have a Yankees era baseball autographed by both coaches, Joe Torre and Don Zimmer, how much is it worth?

It was given to me by my little league baseball coach during the height of the yankee dynasty in the late 90's. Anyone have any clue what its worth?

Update: PS: stupid answers will be reported, like so.
Update 2: Im not planning on selling it any time soon, Im just curious as to its worth.
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