Here is a list of all confirmed 1990 Nintendo World Championships Grey Cartridges.

NEW BOUNTIES!

$200 - Proof of other undiscovered numbers.

$100 - Photo of carts listed in Green, Yellow, Orange, and Red.

$20 - Any new photo not in my database of a green listed cartridge. Go ahead, make some money at a convention by snapping a photo of a cart there. But there's one rule, only the first person at that event can receive the payout if it's in a display case....I'll count it as unique if you manage to hold it outside of the display cabinet.

NOTE: The "Confirmed with No Photos" copies are considered known to exist because they were previously discussed on NintendoAge or are listed in graded Pop Reports. Photos have since been removed from the internet and no known photos currently exist but are reliable enough to count.

The one "Rumored" copies are from very reliable sources who wish to remain anonymous. I do not have any photos to prove they exists, but I am highly confident that this source has no reason to lie especially considering that other items used to be on this same list.

All cartridges in green or yellow are confirmed to exist. The 1 cartridge with a blurry photo is too blurry to make out the number, but its number is known because of past NintendoAge discussion. It may as well be considered "Confirmed with No Photo" since the blurry photo is the only one that I could find.

PRIVACY NOTICE

It is my solemn duty not to track owners, or sales data.

IF YOU OWN A COPY AND WOULD LIKE TO KEEP ITS NUMBER A SECRET, PLEASE ALLOW ME TO KEEP YOUR SECRET SAFE. I have other confirmed numbers not publicly listed, and you can have yours added to the secret list.