Add a signature system. Based off person who signed and then linked to collectible they signed.

Add a way to track signatures, comic and sports. Use the persons signature as the base and then link it to a collectible. For example a Stan Lee signature varies greatly based off which comic he signed. Right now his signature caries about a multiple of x10 to the value of the comic. You can track the value of the signature based off the raw value of the of unsigned collectible