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...
You would ideally need to have an expert in the field look at your memorabilia to determine authenticity and to get a valid certificate. Many sellers of sports related products sell items with valid...
PSA/DNA or JSA.
An autograph that is not authenticated by a creditable company could sell at half the price or less than one that is. Two of the top, and most trusted authenticators are PSA/DNA, and...
A signature that is not properly authenticated could sell at half the market value or less. Two of the most trusted authenticators are PSA/DNA and JSA. Visit the respective websites for information...