We discovered a new variant of Super Mario Bros.

Key Points:

• A longtime video game collector discovered a box containing 97 brand-new, never-before-seen variants of the Super Mario Bros./Duck Hunt NES game, originally intended for destruction and gold recovery from circuit boards.
• The box, found in a Wisconsin retro store’s storage unit, contained pristine cartridges with unique multilingual back labels and manufacturing codes dating to late 1993, representing the last known production run of the game.
• Experts from grading companies identified these cartridges as authentic but undocumented variants, possibly produced for warranty replacements or unreleased bundles, adding significant historical value.
• The collector sent all 97 cartridges to PSA for grading, resulting in high scores including five perfect PSA 10 grades, a first for NES cartridges, confirming their exceptional condition and rarity.
• Plans include keeping some cartridges, auctioning others (with the first auction scheduled for August 12th), and releasing detailed scans and photos online, marking a major discovery in Nintendo and video game collecting history.