I'd like to play devils advocate - This may not be comparing apples to apples with the caliber of players I'm going to mention among other key factors, but if you had a 1927 team signed Yankee ball but it was missing Ruths' signature, and you had the opportunity to get his signature some 20 years later, would you pursue it? I can already anticipate the comments seeking out a Ruth auto to a Mays auto and I don't want to compare the names, eras, supply of signatures in the market place etc but rather, if you have a chance to "complete" a team ball with arguably the best player of that team wouldn't you? Just playing devils advocate so be easy
I'm not paying $1,000 for a Mays signature and I agree with the majority of the boards comments. I'd happily display an original vintage Mays auto next to this piece before paying a large sum of money and risk damage. But the idea of having a newer signature on a vintage piece doesn't bother me personally. If the new autograph was say Dick Groat (sorry Dick i'm a Buccos fan I promise) instead of Willie Mays i'd be content. But when the player missing is a key player i'd pursue it, as I did. I'd pursue Musial too if it were possible rip.