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£120,501 (Est: £187,010 - £261,814)
1987 Porsche 928 Clubsport Prototype ex-Jochen Mass
United States • 14 Aug 2026 • Lot 177
Vehicle Details
AI Listing Summary
This is a rare, pre-production manual 928 Clubsport prototype, originally delivered to F1 winner Jochen Mass. It has accumulated 109,321 km, much of it during Mass's continental travels for endurance races, and comes with its original service book signed by him.
As one of only four lightweight Clubsport prototypes built for factory drivers, this car boasts a unique history and provenance, making it a significant find for collectors of rare Porsche models.
Condition
9
The car is described as a rare prototype with a significant racing pedigree, owned by Jochen Mass. It has a known ownership history and is offered with original documentation and low mileage. While not explicitly stated as 'pristine', the description implies a very well-maintained and historically significant vehicle, fitting the 'Outstanding' category.
/ 10
Transmission:
Manual
Chassis No:
WP0ZZZ92ZHS841983
Odometer:
67,929 miles
Reg Number:
J. MASS
RHD/LHD:
LHD
Delivered new to Formula One race winner and Porsche factory endurance racing legend Jochen Mass.
Rare pre-production manual transmission 928 Clubsport prototype internally known as H54.
Factory-built lightweight retained by Mass until 1998 with a known chain of ownership thereafter.
Furnished with its original service book signed by Jochen Mass and Porsche paperwork.
Offered with 109,321 km (c.
67,929 miles), most accrued by Mass during high-speed continental travel to Group C endurance races.
A fixture at European race tracks during the late 1980s.
The first of only four lightweight Clubsport pre-production prototypes produced, with the other three provided to factory drivers Bob Wollek, Derek Bell, and Hans-Joachim Stuck.
Part of a significant international Porsche collection renowned for the rarest examples of their kind.
Points of note
£120,175
Lowest Price (Since 2020)
£120,338
Median Price (Since 2020)
£120,501
Highest Price (Since 2020)
World Record
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Rare Sale
This vehicle comes to market rarely. In auction records we've only seen 3 sold before
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