“Rocky” star Sylvester Stallone’s highly anticipated collection of rare and vintage watches went up for auction this week, and the 11-piece collection sold for $6.7 million — beating original pre-sale estimates.

One timepiece, the Patek Philippe Grandmaster Chime, broke the record for the most expensive modern watch ever sold through Sotheby’s after it garnered an offer of $5.4 million. It was originally estimated to sell for between $2.5 million and $5 million.

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“The sale of the Patek Philippe Grandmaster Chime was an unrepeatable celebration, not only of a masterpiece by the most revered Swiss watchmakers of technical excellence but also of the legendary icon that is Sylvester Stallone, who has been a deeply influential and admired collector for many decades,” Geoff Hess, Sotheby’s head of watches, Americas, said in a statement.

In a video posted to Instagram, five hopefuls can be seen going to bat for the watches in a bidding war that lasted nearly four minutes in front of over 100 attendees.

The watch was eventually won by a private, anonymous collector based in Asia.

“I’ve had the privilege of owning some truly remarkable watches over the years, each with its own unique character and history,” Stallone said in a statement last month, ahead of this week’s auction, per GQ. “I enjoy the collecting process like so many others in this passionate community, who don’t just see watches as an accessory, but admire them for their history, craftsmanship, artistry—but most importantly—how they make them feel.”

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Other timepieces in Stallone’s collection that were sold included watches from luxury brands such as Cartier, Rolex, Piaget, and Panerai.