The Don Davis Collection

27 April 2013

Lot 158

1957 Mercedes-Benz 300SL Roadster

Sold for $770,000

  • Chassis no. 198.042.7500303
  • Engine no. 198.980.7500146
  • Body no. 198.042.7500217


215 bhp (DIN), 240 bhp (SAE), 2,996 cc OHC inline six-cylinder engine, four-speed all-synchromesh manual gearbox, independent front suspension with twin wishbones, coil springs and anti-roll bar, single-pivot swing axle rear suspension with compensating spring and coil springs, hydraulic telescopic shock absorbers, and hydraulic, servo-assisted brakes. Wheelbase: 94.5 in.

  • Outstanding colors
  • Spectacular performance, even by today’s standards
  • Excellent long-distance touring GT


The spectacular Mercedes-Benz 300SL “Gullwing” was in production for just three years, during which time only 1,400 cars, not including racers and prototypes, were built largely by hand in Stuttgart’s finest tradition. Yet despite the low production volume, Daimler-Benz remained sufficiently convinced of the value of an expensive, image-leading sports car as part of its model lineup to develop an improved open version, resolving the well-documented ventilation issue associated with the Gullwing.

A modified 300SL Roadster chassis was first spotted in the summer of 1956 at Stuttgart, by the German magazine Auto, Motor und Sport. The improved 300SL Roadster debuted in the spring of 1957 at the Geneva Motor Show. By the end of that year, the final 70 of the 1,400 Gullwing Coupes and the first 618 of the 1,858 300SL Roadsters were assembled.

Among the Roadster’s many advancements was a lowered central section of the lightweight 300SL space-frame chassis to allow improved entrance and egress with smaller sills and enlarged doors. Strength was maintained, nonetheless, with the addition of diagonal struts bracing the lowered side sections to the rear tubular members. At the rear, the spare tire was repositioned below the trunk floor, necessitating a smaller fuel tank but maintaining reasonable luggage space.

The Roadster’s suspension was fine-tuned by the repositioning of the single-pivot rear swing-axle and the addition of a coil spring mounted transversely above the differential, linked to the two axle halves by a vertical strut, allowing the use of softer rear springs and providing a more comfortable ride and improved handling. Coupled with fatter tires and a wider track, the Roadster exhibited none of the prior Gullwing Coupe’s tricky handling characteristics. This specific feature was borrowed from the W196 Grand Prix racing car.

These revisions added some 250 pounds, the majority of which were associated with the convertible top and its mechanisms. The snug-fitting roof retracted fully into a well behind the seats and was covered with a hinged panel, making for a sleek, disappearing top body line. Regardless, the car remained an excellent performer with a factory-claimed 137-mph top speed.

According to The Roadster Registry, this car’s early owners were Stephen R. Johnson, Frank C. Beacham, and Per Soholm. There are no dates assigned to these three owners, so it is possible that this early ownership is complete. The car was owned by Ken Novarr, of Dallas, Texas, from approximately 1974–1989. During this period, the car was enjoyed by Novarr extensively, as indicated by the file that contains a copious number of service invoices. Interestingly, these invoices span the entire length of Novarr’s ownership, indicating that the car was serviced on a regular basis. It most recently spent some time with an owner in Massachusetts before joining the Davis Collection.

As presented today, this 300SL Roadster is finished in silver with red leather, red carpeting, and a red padded dash with a black cloth top. It is reported that the upholstery is original, which is believable, given that it has an evenly worn, inviting appearance. With 96,657 miles on the odometer, this car makes no excuses for its appearance. The older paint and brightwork present extremely well, and the engine bay, having been detailed in the past, remains presentable, but it proudly shows signs of the use it has experienced over the years. The 300SL Roaster is guaranteed to remain an icon for generations to come: when driven, this example will serve as an apt testament to the legend that was created in the crucible of racing at Le Mans, the Nurburgring, the Carrera Panamericana, and the Mille Miglia.

Please contact our exclusive automotive transportation partner, Reliable Carriers, for a shipping quote or any other information on the transport of this vehicle.

Alain Squindo


Detroit, Michigan

Alain Squindo joined RM Auctions in 2007, after graduating from Georgetown University in Washington, D.C., with a degree in History. R... read more

Alex Classick

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+44 (0) 20 7851 7070
United Kingdom

Alex Classick joined RM Europe in 2011 as a car specialist, after graduating from Nottingham University with a degree in Business Mana... read more

Alexander Weaver

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+1 310 559 4575
California, USA

Alexander Weaver joined RM Auctions in 2011 as a car specialist, after graduating from Furman University in South Carolina. Born into ... read more

Annette Abaci

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+49 (0) 40 441 95 737
Germany

With post-secondary degrees in Economic Science and Mechanical Engineering, Annette Abaci initially worked part-time at Mercedes-Benz ... read more

Augustin Sabatié-Garat

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+44 (0) 20 7851 7070
United Kingdom

Augustin Sabatié-Garat joined RM Europe in 2012 as a senior car specialist, after more than a decade in the collector car hobby... read more

Dan Warrener

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+1 519 352 4575
Ontario, Canada

Possessing a degree in Economics from Brandon University, Dan Warrener spent the initial stages of his career working around the globe... read more

Don Rose

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+1 617 513 0388
United States

Don Rose joined RM Auctions in 2006, after many years of professionally trading sports and classic cars, and after earning a reputatio... read more

Donnie Gould

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+1 954 566 2209
Florida, USA

Donnie Gould joined the RM team in 2002 as a partner and Car Specialist after more than two decades in the vintage automobile auction ... read more

Gord Duff

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Ontario, Canada

Gord joined RM Auctions in 1998, initially responsible for the transportation and logistics of the company’s auction and restora... read more

Ian Kelleher

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New York, United States

Ian Kelleher began his automotive career immediately following his graduation from Oberlin College, with a B.A. in Politica... read more

Jack Boxstrom

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+1 818 703 2816
Ontario, Canada

Jack Boxstrom joined RM Auctions in late-1996 to assist with the recently acquired, and subsequently record-breaking, auction in Monte... read more

Max Girardo

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+44 (0) 20 7851 7070
United Kingdom

Max Girardo started his career in the vintage automobile industry in 1998, joining Brooks Auctioneers (now Bonhams) as a car specialis... read more

Mike Fairbairn

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+1 519 352 4575
Ontario, Canada

As one of the three founding partners of RM Auctions, Mike Fairbairn has a longstanding interest in the classic car industry. Graduati... read more

Peter Wallman

pwallman@rmauctions.com

+44 (0) 20 7851 7070
United Kingdom

Peter Wallman joined RM Europe in 2007, following nearly two decades in the international advertising industry, read more

Rob Myers

+1 519 352 4575
Ontario, Canada

As chairman and founder of the RM Group of Companies, Rob Myers’s entire career has been devoted to the classic car industry. Ro... read more

Shelby Myers

smyers@rmauctions.com

+1 310 559 4575
California, USA

Shelby Myers literally grew up with the classic car industry infused into every aspect of his life. He had the unique opportunity to w... read more

Vinnie Mandzak

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+1 310 559 4575
California, USA

Vinnie Mandzak joined RM Auctions’ California office in 2012 as a car specialist, following more than 30 years’ experience... read more