Signatures will vary in price based on condition, the type of authenticity that accompanies the signature, the item signed, and how well the item displays the signature. Baseballs are the most common, and preferred by collectorsbecause of it's connection to the game, low cost, availability and it displays the signature well. The signed Baseball represents the average price for a signature, and by deducting or adding from this price for the Item signed accordingly will give you a good idea on value.
The lowest priced signed item would be for a "cut Signature." A cut signature is a signature on a piece of paper, or "cut" from a larger piece. Index cards are the next step up, and both sell at a fraction (about 10%-20%) the price of an autographed baseball. Autograph photos typically sell at about 40-60 percent the price of a baseball with bats, uniform Jersey's and equipment selling at a higher price due to the higher cost of the item, rarity and display.
In general if an autographed baseball is worth $100. the same autograph on a 8x10 photo $50. a cut signature $20. on a bat $150. The percentage of the price could also vary based on the popularity of the player, and how sought after the signature is. Brooks Robinson single signed baseball is worth about $40.-$60. and about $60.-$75. with inscriptions 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 two recent auctions a Brooks Robinson single signed baseball sold for $49.00, another with the inscription "1970 WSMVP" sold for $83.65
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.
value of brooks robinson baseball card
Brooks Robinson single signed baseballA Brooks Robinson single signed baseball is worth about $60.-$75. 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.
Frank Robinson autographed baseball cardA Frank Robinson autographed baseball card is worth between $30. -$40. Prices may vary based on condition, and the type of authenticity that accompanies the signature. Signatures that have not been authenticated could sell at half the market value or less. In general, collectors of baseball cards would rather have a baseball card without the signature. The signature would be considered as a flaw in the condition of the card and will lower the value. If the signature has a lower value than the card it will lower the value of the card. The un-signed card will have a higher value
1972 Brooks Robinson baseball card number 550A 1972 Brooks Robinson baseball card number 550 has a book value of about $25.00 in near/mint -mint condition. Professionally graded cards will sell for more. Condition is important.Common flaws with baseball cards include: rounded edges, creases, off centered, and faded color. Any or all flaws will devalue the card significantly.
$75-$125
Brooks Robinson signed baseball cardA Brooks Robinson signed baseball card is worth about $30. -$40. Prices may vary based on condition, and the type of authenticity that accompanies the signature. Signatures that have not been authenticated could sell at half the market value or less. It doesn't matter too much on which card was signed. In general, collectors of baseball cards would rather have a baseball card without the signature. The signature would be considered as a flaw in the condition of the card and will lower the value of the card as a collectible. If the signature has a lower value than the card it will lower the value of the card. The un-signed card could have a higher value.
$1200.00
Brooks Robinson single signed baseball is worth about $40.-$60. 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. The 1983 World Series baseball might not add more value but, could make it more desired. In two recent auctions a Brooks Robinson single signed baseball sold for $49.00, another with the inscription "1970 WSMVP" sold for $83.65
A Brooks Robinson single signed baseball is worth about $60.-$70. A Mickey Mantle single signed baseball is worth about $400.-$600. I have never come across a Mickey Mantle Brooks Robinson dual signed baseball. They would be rare but by having Brooks Robinson sign a Mickey Mantle signed baseball it will lower the value. If a Mickey Mantle Brooks Robinson dual signed baseball were to come up in auction it would most likely sell below $400. 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 are not properly authenticated could sell at half the market value or less.
In the low 1,000s
On Amazon, Vin Scully autographed baseballs can go for as much as $295.80