LOS ANGELES (AP) — How could a baseball artifact possibly top a ball signed by both Babe Ruth and Lou Gehrig?

How about a ball signed by Babe Ruth, Honus Wagner, Ty Cobb, Cy Young, Tris Speaker, George Sisler, Walter Johnson, Connie Mack, Nap Lajoie, Eddie Collins and Pete Alexander, on the day they all entered the Baseball Hall of Fame?

Such a ball just sold for $623,369, SCP auctions said Monday. That crushes the record of $345,000 for a signed baseball, set in 2013 for a Ruth-Gehrig ball.

The seller was not identified, and the winner who outbid 28 other prospective buyers for the ball was identified only as a Southern California collector.

The only living original inductee who didn't sign the ball was Lou Gehrig, who on that day was headed to the Mayo Clinic in Minnesota where he'd be diagnosed with ALS, the disease that would end his career, take his life and unofficially bear his name.

It was on June 12, 1939, that the Baseball Hall of Fame first opened its doors, though it had been choosing members for three years by then. Most were already dead.

Marv Owen, the star Detroit Tigers third baseman then playing for the Chicago White Sox, was in Cooperstown, New York, to play in an exhibition marking the occasion. His former teammate Hank Greenberg was also there, and had brought along two balls for the inductees to sign, but was too bashful to approach them. Owen wasn't, and got all 11 to sign. He kept one for himself and gave the other to Greenberg.

"With autographed balls, very few can you trace to the point of origin, the point of signing, where you know the circumstances of where it was acquired," said Dan Imler, vice president of SCP Auctions. "It's incredible. It almost puts you in that moment, which is very, very rare for a ball."

Several signed balls have survived from that day, but most have signatures from other players or dignitaries that diminish their value.

The names weren't haphazardly scrawled all over the ball, either. It was as though Owen had future collectors in mind when he collected the signatures in dark, lasting ink. And their placement doesn't seem random either. On one panel of the ball, stacked atop each other, are Cobb, Ruth and Wagner, at the time considered the three greatest players of all time, with Walter Johnson, then considered the greatest pitcher of all time, hovering above them.

"Ultimately that panel of Cobb, Ruth, Wagner is what puts it over the top," said Kevin Keating of Professional Sports Authenticator, who verified the ball's legitimacy. "Those are the elite of the elite. The fact that he got those guys the way he did, in that perfect order on one panel, it's almost as if it's by design."

Owen put his ball in a safe-deposit box, and his family kept it until 1997, when it sold for $55,000.

Greenberg's ball has been lost to history.

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