The 1939 Porsche Type 64 was designed by Ferdinand Porsche himself and predates the very first Porsche production cars by a decade. Porsche designed a trio of vehicles during the 1930s that provide a glance at the origin of the design cues used on various Porsche models throughout the automaker’s existence.

The prototype Porsche is expected to sell for approximately $20 million, making it a world record for Porsche vehicles sold at auction. Continue on for some photos of this super-rare relic of the European automobile industry.

The car that will be auctioned holds such a high value because of the original parts. As is the case with most vintage rides, parts of the car are either restored or replaced in order to return them to showroom-ready appearance. A majority of the internal and external parts of this classic Porsche have remained unmodified.

A Porsche logo was added to the front of the car after it was sold to an Austrian race car driver named Otto Mathé in 1947. Apart from the addition of the logo and a few paint changes, the vehicle remains virtually unchanged.

Origins of Porsche’s design language are obvious when looking at this car. Ferdinand Porsche is also credited with the original design for the vehicle that would later be known as the Volkswagen Beetle.

The Porsche Type 64 features an air-cooled, rear-mounted engine that produces a laughable 40 horsepower. That’s enough power to propel the car to a max speed of 90 miles per hour. The vehicle’s body is made of aircraft-grade aluminum and features a teardrop shape and wheel spats to make it more aerodynamic. After all, it was originally going to be used as part of a celebratory 900-mile race down the Autobahn in Germany.