My name is***** have been dealing in autographs for 40 years. The best place to get this certified is PSA. Items with PSA certs do well at auction. http://www.psacard.com/services/autographauthentication/
Genuine balls are selling for $800-1200 at auction and retail for $2000.
Hi,Is there anything else I can tell you about this? If not please take time to rate my service. This is the way justanswer compensates me for my time and efforts without additional cost to you. It has been a pleasure working with you.Thanks again,Wayne
I'n my opinion, Yogi Berra and Mickey Mantle's autographs are consistent with other genuine examples from the same time period. I think if you submit this to get certified, you will be successful.