Leading the exceptional roster of “Rennsport” Porsches recently consigned to RM’s August 17–18, Monterey sale is an extraordinary, well-documented 1971 Porsche 917/10 Spyder Can-Am racecar (chassis 917/10-002). Raced in period by Jo Siffert, the car on offer is widely considered one of the greatest sports racing cars ever built. Initially tested at the Can-Am course in Weissach, Germany, 917/10-002 made its official racing debut at Watkins Glen. Siffert raced the car in six out of the ten Can-Am races that season, enjoying strong results before his life was tragically cut short. 917/10-002 returned to the factory race department shortly thereafter, where it was rebuilt and modified for the 1972 European Interserie. This time with Willi Kauhsen behind the wheel, 917/10-002 further built on its strong race record, scoring an impressive seven podium finishes from nine starts.
RM predicts the 917/10 will sell for $2,900,000–$3,500,000.
The 917/10 will be surrounded by a terrific roster of other competition bred Porsches at the sale, including the 1963 Porsche 904/6 Carrera GTS Factory Works Prototype (chassis 906-002). The second of Porsche’s 904/6 factory team cars, of which just five survive, it is not only one of the limited few developmental prototypes built in 1963, but also one of the few 904/6s to retain its original 906 six-cylinder engine with which it was delivered to its first owner. RM predicts the 904/6 will sell for $1,800,000–$2,200,000. Other Porsches added to the sale will include a 1981 935 JLP-3, a 1987 962, a 1998 911 GT1 and a 1973 911 Carerra RS Lightweight. More details can be found at www.rmauctions.com
