ERC721

--- # Bring your IRL cards onchain Tokenize your card for free on [Courtyard.io](https://courtyard.io/?utm_source=card-description&utm_medium=opensea). Keep it vaulted, sell with a click, or burn this NFT to have the identical physical item shipped anywhere in the world, whenever you want. [Learn more](https://courtyard.io/about/?utm_source=card-description&utm_medium=opensea). --- # Proof of Integrity The token ID of this NFT is cryptographically derived from the fingerprint of the matching physical item ("Baseball | PSA 64136972 | 1957 Topps 90 Warren Spahn | 4 VG-EX"). [Learn more](https://docs.courtyard.io/courtyard/technology/proof-of-integrity/?utm_source=card-description&utm_medium=opensea). By purchasing, selling or owning this NFT, you agree to Courtyard.io's [Terms & Asset Management Services Agreement](https://courtyard.io/nft-terms/?utm_source=card-description&utm_medium=opensea).

Name

1957 Topps #90 Warren Spahn (PSA 4 VG-EX)

Owner

0x0000000000000000000000000000000000000000

ID#50488185…095405

Rarity

N/A

Grader

PSA

Serial

64136972

Grade

4 VG-EX