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
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A Jackie Robinson baseball card is worth about $750. - $1,400. Price will vary based on condition, and the type of authenticity that accompanies the signature. The type of card, and how well it displays the signature will effect the price, but not the value of the card unsigned. Collectible items could add value to the price of a signature but not always. As in the case of a baseball card, generally a collector 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. The bulk of the value relies on the value of the signature of the player that signed the card, and how well the card displays the signature. A highly desired card could add value to the signature. In Recent auctions:
a Jackie Robinson signed B&W HOF card sold for $1,434.00 (May 2008)
a Jackie Robinson signed Exibit card Encapsulated by PSA/DNA sold for $776.75
a Jackie Robinson signed post card Encapsulated by PSA/DNA grade Gem Mint sold for $1,434.00
Frank Robinson signed baseball is worth about $60.-$90.
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. Collectors will pay more for inscriptions like 500 HR or HOF, and pay less for personal inscriptions like "Good Luck Chuck" In a recent auctions a Frank Robinson single signed baseball sold for $89.63
A Frank Robinson signed baseball card is worth between $30.-$40.
Value is based on average prices of recently closed auctions. Prices may vary based on condition, and the type of authenticity that accompanies the signature. Signatures that have not been properly authenticated could sell at half the market value or less. Add for inscriptions.
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.
A Frank Robinson signed bat is worth between $90.-$150. The most preferred bat for a signature is a bat closest to the size, and model the player used. The better the quality of the bat the higher collectors value it will have. Value is based on average prices of recently closed auctions. Prices may vary based on condition, and the type of authenticity that accompanies the signature. Signatures that have not been properly authenticated could sell at half the market value or less. Add for inscriptions. In a recent auction a Frank Robinson signed baseball bat sold for $115.99
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. Collectors will pay more for inscriptions like 500 HR or HOF, and pay less for personal inscriptions like "Good Luck Chuck" In two recent auctions a Brooks Robinsonsingle signed baseball sold for $49.00, another with the inscription "1970 WSMVP" sold for $83.65
A Frank Robinson single signed baseball is worth between $60.-$90.
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.
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. Signatures that are authenticated or sold by a trusted memorabilia dealer will sell at a higher value.
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.
Collectors will pay more for inscriptions like 500 HR or HOF, and pay less for personal inscriptions like "Good Luck Chuck"