The value of the Baseball will rely on the player that signed the baseball. If it is a team baseball you could look up the team at the Team Signed Baseball Price Guide (Link located Blow.) The price guide features links to full team rosters to help you figure out what year the baseball is from. Searching for the players that played the least amount of time for the team will help you figure it out quicker. Once you have narrowed it down to one year the price guide also provides a list of key signatures for that year. These signatures are the most important on getting top value. Once you have narrowed it down to one year you can find the value. If the baseball is signed by various players from both years then the baseball might have less value. If you need the value of a single signed baseball contact me and I'll help you out.
Ebay
a billion dollars
This type of merchandise can sell for well over $500
About $40.
You can sell autographed albums to record collectors. You can also sell them to fans of the person who autographed them. Another person who would be interested is one who collects autographs.
$425
On Amazon, Vin Scully autographed baseballs can go for as much as $295.80
Ozzie Smith Autographed baseballAn Ozzie Smith autographed baseball is worth about $75.-$100. 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.
prolly ebay, if not a rich auction
You can certainly sell this type of item on ebay. Just make sure you have a good idea of what the approximate value of this specific baseball is. Good idea to include who autographed the ball and when, the condition etc.
50 dollars
69