Brooksie is a Hall of Famer and the greatest Third Baseman to ever play.
His auto'd ball with a Certificate of Authenticity is worth around $150.
Selling it on eBay with no COA will probably fetch about $50.
A Brooks Robinson autographed baseball is worth $83 if it is on a Rawlings Official Major League baseball and it has been properly authenticated by a reputable authenticator. Inscriptions add to the value (anywhere from 15% to 35%) of a ball and Hall of Fame (HOF) is one of the most valuable inscriptions. For Brooks Robinson, having 'HOF '83' inscribed on the ball adds about $23 to the value. So the total value of a Brooks Robinson autographed baseball inscribed with HOF '83 is just over $100.
$1200.00
In the low 1,000s
On Amazon, Vin Scully autographed baseballs can go for as much as $295.80
About $1,000 to $3,000
Anywhere from $20 to $40.
$800,000,000
$50
Close to $300
The autographed baseballs are valued at a price between $40 and $60. The exact price will depend upon the condition of the baseball and when it was signed.
I would estimate $25.00 - $50.00
$0 to negative. It may actually lower the price of the baseball.