Help Identifying Team Signed Balls
I have a couple of Official MLB Balls autographed by entire teams from the early 1980's. One from the Athletics (includes Henderson, Billy Martin, etc.) I believe Joe Morgan is on it as well so may be 83/84 time frame.
I also have a similar one with Sparky and the Tigers.
2 Major questions
what is the best, most official way to identify, certify these?
over time even though they have been in cases a good number of the signatures have faded to varying degrees. How does this impact value, on these generally?
Best,
David
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