• One of only 52 customer examples of Porsche’s extraordinarily successful 2-litre sports racer
• Exported to the Netherlands in April 1966; sold new to Racing Team Holland
• Raced across Europe between 1966 and 1971, scoring class and overall victories at Zandvoort, Zolder, Aspern, Welschap, and Snetterton
• Restored by Gustav Ulrich and August Deutsch Mechanik from 2008 to 2013; now presented in its factory-correct paint shade
• Powered by a tuned 2.4-litre Porsche 911 S engine and accompanied by a spare 906 engine (Type 901/20, numbered "149") supplied on an engine stand
• Offered with a copy of its Kardex sheet, appraisals by marque experts Rolf Sprenger, Walter Näher, and Andy Prill, and an expired FIA Historic Technical Passport

At a time when Ferrari struggled to produce the 50 cars required to homologate a Dino V-6-powered 2-litre sportscar, Porsche almost immediately sold out its new 906. Featuring a tubular steel spaceframe chassis, low nose, “Kamm” tail, and curved windscreen, here was a diminutive low-drag racer that could still accommodate a suitcase to satisfy the rulebook.

The project, realised under the direction of Porsche luminaries Ferdinand Piëch and Hans Mezger, was shown to the press at the Zuffenhausen factory in January 1966 and sold to customers for $11,500. Just 65 chassis were produced, with only 52 examples fitted with the 901/20-type Carrera 6 engine. Newly developed for the 906, using titanium and magnesium parts, the motor was 54 kilograms lighter than that of a contemporary 911 road car. It returned 210 horsepower from 1,991 cc to propel a package that weighed only 580 kilograms.

Of those cars, chassis number 906-146 offered here was delivered on 20 April 1966 to Pon’s Holland, the long-standing Volkswagen and Porsche importer in the Netherlands. Per a copy of the Kardex sheet, the car was finished in Orange befitting of the first owner: Racing Team Holland. The team was supported by the Dutch royal family and in particular Prince Bernhard, a patron of the racing outfit. At the request of its royal sponsors, and further to its orange exterior, the Porsche was fitted with royal blue seats.

On 24 April the car made its competitive debut in the NAV national meeting at Zandvoort, where driver Wim Loos claimed a 2-litre class win. With David van Lennep next behind the wheel, podiums arrived at Trier and in the Paris Grand Prix at Montlhéry. The Carrera 6 enjoyed regular outings over the next year, including Ben Pon Jr chalking a brace of outright wins at Zandvoort, before the car was crashed in practice ahead of the 1000 Km of Spa. The Porsche was subsequently rebuilt at the Porsche factory in 1968 before being sold to Antoine Hezemans and his STR team. Wearing a new white livery featuring a blue, white, and red (the Dutch national colours) stripe, the 906 banked three more victories before Arie Ruska bought the Porsche at the end of 1969. He raced it through to October 1971 and clinched further podium success in Zandvoort and Welschap, affording chassis number 146 one of the longest racing careers of all 906s.

The following year, the 906 was reportedly sold via renowned sports car dealer Rob de la Rive Box to a Dutch surgeon. The Porsche was later acquired by collector Albert Westermann, who retained it until 2002. The car then found it first non-Dutch custodian as it was acquired by the consignor owner in 2005. Treated to a body-off restoration by Gustav Ulrich and August Deutsch Mechanik (documented in accompanying photographic albums), the Porsche was returned to its period Orange hue, as it presents in today. The car was also fitted with a 2.4-litre 911 S engine with dual ignition and Weber carburettors. The 906 motor is supplied as a spare on an engine stand.

The documentation is supplemented by two expert reports from the world-renowned Porsche brand experts Walter Näher and Rolf Sprenger. In 2013, the reports (see photo documentation) were added to the Porsche factory archive. In 2025, another report by Andy Prill confirmed the vehicle's authenticity. The car also comes with an expired FIA Historic Technical Passport.

A storied and successful example of Porsche’s great 2-litre sportscar, this 906 would make for a standout addition to any motorsport-centric collection.
To view this car and others currently consigned to this auction, please visit the RM website at rmsothebys.com/auctions/mu25/.