DALLAS — A one-of-a-kind basketball card signed by Kobe Bryant and Michael Jordan became the most valuable sports card ever sold, according to Dallas-based Heritage Auctions.

Famed Shark Tank investor Kevin O'Leary was part of a group of three buyers who purchased the card, he revealed on CNBC Monday morning . O'Leary said he and two other investors, who are well-known within the sports card hobby, formed a partnership to purchase the card.

"I'm the analytical guy in the group, I just kept looking at the numbers, those two guys are crazy hobbyists," O'Leary said on CNBC. "But together, we did do that, we stayed up until three in the morning on Saturday night... We got together on a Zoom (call). My wife thinks I’m nuts. She just went to bed saying this is too crazy. You guys are all cra

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