This card is worth $20,000? Are there any other sales to support this or are you just throwing a number out there?
I realize $20k seems ridiculous but to my knowledge this is probably the first ever blockchain art token/in-game item. It predates the invention of ERC-721s by several years and a lot of them are probably lost. If someone made a way to mint ERC-721 versions of these, 1:1, and put them on the ETH blockchain where they could be used in Decentraland then I could see them becoming highly sought after.
Past sales are on counterparty:
https://sogassets.com/dex/SATOSHICARDThey kind of screwed up and made the cards divisible so you'll see a lot of fractions of them got sold.
I almost bought one of these for ~1 btc several years ago. (I do have the SatoshiLite version
)
The one problem is I believe Spells of Genesis and 1 other party are
holding the vast majority of these tokens and could crash the price if they put them into circulation.