What is the value increase of a signed baseball card vs regualer card?

Answer 1

Signed Baseball Cards vs Un-Signed

A signature does not increase the collectible value of a Baseball card. Once a card is signed the signature (not the card) becomes the collectible, and holds the bulk of the value. The baseball card is used to display the signature, and the value will be effected by how well the signature is displayed.

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 will have a higher value.

This is why it is not a good idea to have an expensive card signed. Signatures have a higher value on a baseball than on a card. Signed baseball cards sell at about 10-30 percent the value of a signed baseball. The percentage will vary based on the popularity and rarity of the signature.