Did he sign the ball for you, in your presence? Or, did you purchase the ball from someone? In any event, you could go to a Sports Memorabilia store near you and ask them about the process, or attend a sports card and memorabilia show, I'm sure somebody there will be able to assist you. Another thing, try these websites- www.psanda.com or www.onlineauthentics.com I've never tried these sites so I don't know anything about them, but I'm sure it'll be a good starting point for your purposes.
A Mel Ott single signed baseball is worth between $4,500.-$5,500.Value is based on average prices of recently closed auctions. Prices may vary based on condition, and the type of authenticity that accompanies the baseball. Signatures that have not been properly authenticated could sell at half the market value or less. Add for inscriptions. In a recent auction a Mel Ott single signed baseball sold for $5,078.75
Trevor Francis, signed from Birmingham in 1979.
less than 60 cents depending on the condition.
$100,345,99,677
1000 or more
Yadier Molina signed baseballs w/ certificate of authenticity are valued around $100 retail.
Signatures that have not been properly authenticated could sell at half the market value or less. Two of the most trusted authenticators in the hobby are PSA/DNA and JSA. Check their respective websites for information on how to get your signed football authenticated as well as the fee. The do business through the mail but you can check their show schedule to see if the will be in your area.
Depends who signed it, and if there is a certificate of authenticity or not. You could either put it on eBay or enter it in a sports memoribilia auction and see what the market is prepared to pay for it.
With NO autograph, and in mint condition without a single flaw, that card is worth 50 cents. Autographed, it's worth about $10. If you tried to sell it on eBay with no certificate of authenticity, you'd be lucky to get half of that. Source: Huge memorabilia and card collector
I have seen a Kevin Millar signed baseball on the Legends Are Forever website going for $59.99 that states it is accompanied by their Hologramed Certificate of Authenticity.
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it depends on if you have proof of an authentic autograph. You would need a certificate of authenticity to get its full value of $150-300. If you had a picture of the signing it would also be usefull.
The value for an autographed football signed by the Super Bowl Champion Rams depends on its condition. This ball in excellent condition is valued between 129.99 and 149.99 as of 2014.
How Much is the same Autographed football by Chris Cooley and Mike Sellers football worth
i have a Michael Cobb football card signed what is it worth
A signed Walter Payton jersey together with the Certificate of Authenticity can be worth over $4,000. The value is based on what a buyer would actually pay for the item and can vary due to market circumstances.
The Academy of Manuscript and autograph, LLC is a good place to start there website is www.autographsauthentication.com or www.autographauthenticationservices.com