"This is your chance to own the Super RARE Nintendo World Championship Cart for the NES!!!! As you can see by the pictures, this is an authentic, true to life original cart; no reproduction cart here," reads the description.
Nintendo World Championships was a series of short parts of different games that were put on the same cart for a competition, the Nintendo World Championships. Players were set against each other to see who was the best Nintendo player around - with the top players being given big cash and product prizes. However, all 90 of the finalists were given a copy of the grey cart Nintendo World Championships, which is on offer today.
Previous sales of these carts have gone for between $10,000 and $20,000 though perhaps this one won't get quite as high since the label is in such poor condition.
The auction is set to end tomorrow, so if you have a fair amount of extra cash lying around and want to own a bit of computer gaming history, now's your chance.
Still, remember there are gold versions of these carts out there. They were given away separately in Nintendo Power magazine and are worth even more. There's at most 26 but very few have their whereabouts known.