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.
How much is Will Blackwell worth without it signed
A 1971 Larry Csonka card is worth; $15.00
100 $
I have a 1994 card signed by Jeff Blake in a protective cover in excellent shape. How much is it worth?
i have a Michael Cobb football card signed what is it worth
1000$
40_50 dollars
One in good condition is worth about... maybe...$30
This common card is worth less than 10 cents.
1.5 mill
How much is a signed Micheal jordan Senior year at North Carolina basketball card worth?
it it worth 350 or 625 signed