Porsche Type 597

A Porsche Type 597 developed for the German army might fetch $775,000

Porsche's Cayenne is its first 4x4 and off-roader. In the mid-1950s, Porsche created the Type 597 for the German Army.

In 1953, Porsche competed against Auto Union and the Borgward Group for a military contract. The Type 597 light vehicle was created for the army. RM Sotheby's will sell the 5th of 22 prototypes in August.

The Type 597 appears unlike any other Porsche, but it has more in common than you think. It has a 1.5-liter flat-four engine from the Porsche 356.

It has the same four-speed manual transmission as the 356 but was developed with reliability over performance in mind.

The 957 has a configurable four-wheel-drive front axle coupling. Its design allowed it to climb steep hills and cross enormous bodies of water. At least two of the 22 prototypes were amphibious with propellers and oars.

Porsche didn't obtain the military contract because of the vehicle's high development expenses, assembly time, per-unit price, and Porsche's difficulty producing it alongside the 356 Carrera and 550 Spyder and distributing required spare parts.

This restored model is Olive Green with a green interior. RM Sotheby's predicts $725,000 to $775,000 for it.