Early next year, collectors will have the opportunity to buy a truly special part of automotive history. The first-ever 1965 Shelby GT350 R Prototype is set to roll across the auction block in January at Mecum’s Kissimmee, Florida sale.

Built under the supervision of the legendary Carroll Shelby, it was the first 1965 Ford Shelby GT350 production car and prototype. It served as a test car for Shelby American engineers and led to the 34 customer R models that would eventually be produced.

Not satisfied with simply testing the car on empty racetracks, though, this car was also campaigned during the 1965 SCCA racing season, winning 10 events. Stunningly, it is also the first-ever Shelby Mustang to win a race and was driven by numerous legends, including Ken Miles.

Read More: 1965 Shelby GT350R Prototype Could Become The Most Expensive Mustang Ever Surpassing The $3.5M Bullitt

“As one of the most decorated Mustangs in automotive history, this Shelby Mustang GT350R Prototype upholds an important reputation for carmakers, engineers, and fans alike,” said Aaron Shelby, grandson of Carroll Shelby. “Its history of high-performance, innovative design features, and timeless aesthetic makes this vehicle a marvel for auto enthusiasts, and we are delighted to have taken part in shaping the future of car making and racing. The sale of this vehicle offers a novel opportunity for a buyer to experience the ingenuity and legacy that is second to none.”

The car was eventually dubbed the “Flying Mustang” and was immortalized on the cover of Car & Driver Magazine in 1966. Shot in mid-air, as the photos below prove, the magazine’s editors were spoiled for choice with photos, as the car appears to have spent much of its time in the air.

Since retiring from racing, the car has passed through a number of hands. Although it was briefly lost, it was found in Mexico in 1989 before being displayed at the Shelby American Museum in Boulder, Colorado for 14 years. Collector John Atzbach then bought it in 2010 and commissioned a full restoration that took four years to complete.

Returned to 1965 condition, that’s the state it’s currently in. As a consequence of its considerable provenance, the car is expected to sell for a record-setting price. Indeed, last year, it became the highest-price vehicle sold by Mecum when it was auctioned off for $3.85 million as part of the John Atzbach Collection in July 2020.

You can track its progress at the Mecum Kissimmee Auction, which runs from January 6-16.