Former Duke star Cooper Flagg joined the Dallas Mavericks as the No. 1 overall pick in the 2025 NBA Draft. Photo by Sara Yenesel/EPA

Aug. 11 (UPI) — A coveted Cooper Flagg one-of-one rookie debut patch autograph card was found in Rhode Island after the Dallas Mavericks offered an enticing haul to whoever found it.

RhodyBreakers, a division of Baseball Cards of Rhode Island that opens card packs on live streams, revealed the prized card Monday for a client identified as Jason Williams.

“Unbelievable,” RhodyBreakers wrote on Instagram. “What a night. What a break!”

Flagg signed the Topps card, which includes a patch from the jersey he wore during his Oct. 22 NBA debut, on July 17 at Fanatics Fest. On Thursday, the Mavericks announced a “bounty” they would provide to whoever gave them the card in a trade.

That deal includes two premium season tickets in the lower level for 32 years, a Flagg signed, game-worn jersey, a postgame photo with Flagg, private photoshoots with the NBA Rookie of the Year Trophy and Larry O’Brien Trophy, VIP tours, a basketball experience at the American Airlines Center and a road trip to see the Mavericks in Boston.

The card’s estimated value could be in the millions, including a $1.5 million cash advance from Goldin, an auction house founded by Ken Goldin. Goldin said last week that he would then put the card up for auction, with extreme publicity, and try to get $3 to $5 million from its sale.

A similar Topps rookie debut patch autograph card for Pittsburgh Pirates star Paul Skenes sold for $1.11 million last year. Like the Mavericks, the Pirates offered a bounty in a proposed trade for the card.

That haul included season tickets behind home plate for 30 years, a private softball game at PNC Park, a spring training experience and two Skenes autographed jerseys.

Skenes’ girlfriend, former LSU gymnast Livvy Dunne, also offered the card owner the chance to sit with her in a suite at a Pirates game.

Flagg, 19, joined the Mavericks as the No. 1 overall pick in the 2025 NBA Draft. The former Duke All-American and National Player of the Year averaged 21 points, 6.7 rebounds, 4.5 assists and 1.2 steals per game en route to NBA Rookie of the Year honors.