Super Mario 3 Prototype Sells for $31,200

[kirbyrj]

https://www.nintendoenthusiast.com/super-mario-bros-3-prototype-cart-auctions-for-more-than-31000/
https://comics.ha.com/itm/video-gam...BrowseTabs-Auction-Archive-ThisAuction-120115

This Super Mario Bros. 3 prototype ended as the 16th highest-selling auction item that Heritage Auctions has conducted in the video game category.

 

[Verge]

Why would they use a NES cartridge in japan?

 

[kirbyrj]

Why would they use a NES cartridge in japan?

Maybe English localization?

 

[sc5mu93]

I need to remember to hold onto junk from work in the hopes that someday someone will give me big bucks for it.

 

[Merc1138]

Why would they use a NES cartridge in japan?

I'm sure you've see the famicom cartridges. If I were to take a blind guess, it's because the NES cartridges had more room for the dev board someone wanted to use and it's not like they wouldn't have had easy access to them to gut one to use as a shell.