While it’s not uncommon for someone to make a fortune after finding a rare painting or antique, a Nevada man discovered a less common source of riches while rooting through the attic of his childhood home: an old Nintendo cartridge!

Reno resident Scott Amos found an unopened cartridge of Nintendo’s “Kid Icarus.”

The game, which cost $38.45 at the time, was still in a bag with a receipt dated December 8, 1988…

Initially thinking it could be worth “a couple hundred dollars,” Amos was shocked to learn it was much more valuable: $10,000!

“To find a sealed copy ‘in the wild,’ so to speak, not to mention one in such a nice condition, is both an unusual and rather historic occurrence,” Heritage Auctions Video Game Consignment Director Valerie McLeckie said. “We feel that the provenance will add a significant premium for serious collectors.”

Amos says no one in his family even remembers buying the game, but he’ll be happy to accept the money after it’s auctioned off…

He plans on splitting the windfall with his sister so they can take their families on a vacation to Disney World.

What’s the oldest thing YOU own?

Have YOU ever gotten rid of something that’s probably worth some money today?