Hello Everyone, I am looking for some advice on an autographed baseball that my late father has left to me. The ball is approximately 65 to 70 years old.

I believe it to be the only one in existence with these exact signatures on it. My father had it signed in person at Yankee Stadium when he was a kid when his father took him to the game. I believe it to be a game used ball as well in that game.

I am looking for advice as to where to take the ball to have it authenticated with a COA. There is no question in my mind that the autographs are real as my Grandfather was friends with some of the Yankees players at the time which made it easy to get the signatures in person at the game.

The autographs on the ball are as follows: Thurman Munson, Mickey Mantle, Allie Reynolds, Phil Rizzuto, Billy Martin, Elston Howard, George Steinbrenner.

So, where should I take the ball to get the COA done? I am very weary of shipping the ball as there is the possibility that it could get lost, etc. I would rather not let it out of my possession. Also, anyone on here have any type of a guess as to what the ball would sell for IF I were to sell it or where to take it to sell it ? Auction, etc ?

Thanks for any advice / answers, Joshua