The 1965 Shelby GT350R Prototype sells for $3.85 million at Mecum Indy 2020 and claims title as the most valuable Mustang in history. The final hammer price on the block reached $3.5 million resulting in a final sale price of $3.85 million including the buyer’s premium. Recognized as the “Flying Mustang,” the first Shelby GT350 “R-Model” ranks not only as the most historically important Shelby Mustang in the world, but it is also arguably the most important Mustang in the history of the marque.

1965 Shelby GT350R Mustang: Ultimate In-Depth Guide