Rare Nintendo cartridges of Super Mario Bros. and Duck Hunt found in Waukesha, Wisconsin storage could be worth millions - ABC7 Chicago

A collection of rare, previously unknown Nintendo cartridges was discovered in a Wisconsin storage unit. Experts believe these games, which feature unique hardware and labels, could be worth millions at auction.
Why it matters
This discovery highlights the high-value market for video game collectibles and the historical significance of manufacturing variations in gaming history.
WAUKESHA, Wisc. (WLS) -- A box of Nintendo games found in Waukesha, Wisconsin could be worth millions.
Inside were nearly 100 copies of a previously unknown version of Super Mario Bros. and Duck Hunt.
Experts said the cartridges were printed two years after the last known run and feature different labels, screws, manuals and motherboards.
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