Lot 56

2014   |   Pebble Beach Auctions 2014

1929 Alfa Romeo 6C 1750 SS Spider

SOLD $836,000


$1,400,000 - $1,900,000| Without Reserve



Car Highlights

Immensely Rare and Important Prewar Alfa Romeo
Sporting Open Coachwork Built During the 1930s
Recently Restored
Documented by Marque Authority Simon Moore

Technical Specs

1,752 CC DOHC Inline 6-Cylinder Engine
Crankshaft-Driven Supercharger
Single Memini Carburetor
85 BHP at 4,500 RPM
4-Speed Manual Gearbox
4-Wheel Mechanical Drum Brakes
Front Beam Axle with Semi-Elliptical Leaf Springs and Friction Shock Absorbers
Live Rear Axle with Semi-Elliptical Leaf Springs and Friction Shock Absorbers

Saleroom Addendum

*Please note this car is not documented by Simon Moore as described in the catalogue. Please also note that another marque expert has indicated that this car’s gearbox is likely an earlier type unit.

Register to Bid

Owner, United Kingdom (circa 1936)Lex Williamson, South Africa (acquired circa 1936)Paul Fatti, Johannesburg, South Africa (acquired from the above circa 1949)Hugh Gearing, Johannesburg, South Africa (acquired from the above circa 1950)Current Owner

While best known for its road cars following WWI, Alfa Romeo’s competition legend accelerated in 1923 when Nicola Romeo hired engineer Vittorio Jano away from Fiat. Progressing from the P2 Grand Prix car, which captured Alfa Romeo’s first World Championship in 1925, Jano designed the famous “6C” line beginning with the 6C 1500.

The larger-displacement 6C 1750 debuted in 1929, and it was equally adept on the road and racing circuits, proving reliable, powerful, and fast. Three models were available, from the single overhead cam Turismo and DOHC Gran Turismo, to the short-wheelbase Super Sport, available normally aspirated or supercharged. The first-year 6C 1750 models of 1929 were internally designated as the “Third Series,” following the prior two series of 6C 1500 models. In all, Alfa Romeo built over 2,500 examples of the 6C 1750 through 1933, including 121 third-series Super Sports, with chassis numbers spanning from 0312851 to 0312971 according to quoted factory records.

Constructed with pioneering use of lightweight alloys, the Super Sport rode atop a short 2,745 mm wheelbase. Rearward engine placement provided excellent weight distribution and balance. Engines featured dual overhead cams and were again available with or without supercharging. While underpinnings were fairly traditional, comprising a solid front axle, live rear axle, and semi-elliptical leaf springs, the lightness, relatively compact dimensions, low ride height, and powerful engines delivered excellent dynamics and performance capabilities for the era.

Just three months following launch, a 6C 1750 driven by Giuseppe Campari and Giulio Ramponi won the 1929 Mille Miglia. Later that year, Marinoni and Benoist won the Spa 24 Hours in Belgium. Alfa Romeo took the Targa Florio, too, and one year later, the company won its second Mille Miglia in addition to a host of other events. The company went on to victory in eight runnings of the Mille Miglia during the 1930s, as well as the German Grand Prix in 1935 against the formidable Mercedes- Benz and Auto Union entries. In short, Alfa Romeo began the 1930s as it ended the 1920s – utterly dominant – and the 6C 1750 was a major key to that success.

Numbered 0312901, this Alfa Romeo was completed during the first half of 1929. By 1936, it was in South Africa, owned by Lex Williamson and wearing its current body. According to conversations conducted by long-term subsequent owner Dr. Hugh Gearing of Johannesburg, South Africa, the vehicle’s hand-built body was constructed in England during the mid-1930s and inspired by that of an 8C 2900A displayed at Earls Court. Next, the car was sold circa 1949 to Paul Fatti of Fatti Engineering, who in turn sold the Alfa to Dr. Gearing around 1950. Dr. Gearing, a well-known Alfa Romeo enthusiast, retained 0312901 for over 60 years, entering it in vintage races and shows, including a brief drive at Kyalami during the latter 1990s by former Grand Prix World Champion Juan Manuel Fangio.

The consignor acquired this beautiful Alfa Romeo in September 2012 and immediately commissioned a complete and meticulous concours-quality restoration at Automotive Restorations, Inc. in Stratford, Connecticut. As offered, 0312901 marks an outstanding find as one of precious few surviving examples of the 6C 1750 Super Sport. Engaging throughout, historic, and very rare, this 6C 1750 Super Sport will provide a welcome entry to many of today’s finest events.