According to Witherell’s, the prized firearm was passed down to Capone’s son Sonny and was later passed down to Capone’s granddaughters.
The .45 pistol reportedly has a blue finish with "excellent" grips, the auction house reported to prospective buyers.
Capone’s favored gun was only one part of a larger estate auction where 175 Capone family heirlooms were sold, according to a list of realized prices from Witherell’s.
The auction, which was titled "A Century of Notoriety: The Estate of Al Capone," took place on Friday, Oct. 8, 2021. Nearly 1,000 bidders registered for the auction, and collectors were able to place bids online and in person at The Sutter Club in Sacramento, California.
The Capone family’s auctioned heirlooms included other antique guns, jewelry, personal photos, movies and prison letters.
Witherell’s estimated Capone’s Colt Model 1911 semi-automatic pistol was worth between $100,000 and $150,000, but the gun went on to become the auction’s highest bid.
An anonymous buyer purchased the historic gun for $860,000, Witherell’s confirmed to FOX Business. With the buyer’s premium included, the firearm’s final price tag jumped to $1,040,600.
"We expected that Al Capone’s personal gun would be the top-selling item because we immediately received multiple six-figure bids when we announced the auction back in August," said Witherell’s cofounder, Brian Witherell.
He went on, "The final selling price, along with the record number of registered bidders, completely exceeded our expectations. It really speaks to the notoriety and allure of Al Capone who is more widely known today than he was 100 years ago."
Other notable six-figure sales made during the estate auction included Capone’s Colt .38 semi-automatic blue pistol (sold for $200,000), Capone’s monogram Patek Philippe pocket watch (sold for $190,000) and Al and Mae Capone’s decorative cigar humidor (sold for $120,000).
Witherell's is continuing to finalize sales, but the auction house believes the grand total of Capone’s estate brought in more than $3 million.
"We decided that it was time to part with these family heirlooms and to reveal a very different side of Al Capone that most people would never imagine," said Capone’s granddaughter Diane Patricia, in a statement provided to Witherell’s.
"To us, he was Papa. He was a very loving and doting husband, father and grandfather who would run around the house playing with us as small children," she went on. "He was clearly a complex man, and that’s evident if you examine the years after his imprisonment at Alcatraz."
The Capone family’s auction took place only days after the late patriarch’s Miami home sold for $15.5 million, according to the New York Post.