The Mercedes-Benz 300 SL remains one of the most important and celebrated vehicles ever engineered. Built as a roadster from 1957 through 1963, the open version offered improvements over the original Gullwing coupe. It featured a frame fortified with additional structural members, allowing for traditional hinged doors. This specific 1957 Mercedes-Benz 300 SL Roadster has benefited from a comprehensive, eight-year restoration, bringing it to truly magnificent condition.
The Art of Improving Perfection in the Roadster
The 300 SL Roadster was far more than simply a topless Gullwing; it was an improved machine. Structural reinforcement enhanced torsional rigidity significantly. A low-pivot, swing-axle rear suspension largely eliminated the coupe’s tendency to oversteer. Engine compression was increased to 9.5:1, yielding an additional 25 horsepower for better driving.
Refinements for the Grand Tourer
The roadster’s engine compression and a standard sports camshaft resulted in 300 bhp. Furthermore, a lower 3.89:1 rear end improved acceleration while maintaining a useful top speed of 137 mph. Roll-up windows and softer coil springs were added to ensure a more enjoyable driving experience. Though packaged as a flagship luxury tourer, the roadster was the more usable and easily enjoyed of the two 300 SL models. Only 554 roadsters were constructed in 1957.
A Concours-Winning, Matching-Numbers Example
Chassis number 7500469 was completed in November 1957. It is presented in its exceptional and rare original color combination. This configuration is Schwarz paint over an optional interior of sumptuous Cream leather (DB 1060). The car retains its matching-numbers engine, gearbox, front axle spindles, rear axle, and coachwork. This highly original status is confirmed by mechanical stampings that correspond to the factory build information.
Documentation and Ownership Provenance
The Mercedes-Benz was originally distributed to the US market through the Studebaker-Packard arrangement. It has a short ownership chain, with only two caretakers since 1967. A copy of its factory build sheet, or lieferschein, confirms the original specification. The roadster is also documented with an entry in the Gullwing Group Register.
The Meticulous Eight-Year Restoration
In early 2017, the car underwent a complete mechanical overhaul performed by Mercedes-Benz expert Albrecht Stachel. The mechanical rebuild included blueprinting the block, plus the installation of new internals like a crankshaft and pistons. The four-speed manual gearbox, differential, and Bosch mechanical fuel injection were all rebuilt. The final, nearly five-year restoration ensued after the consignor acquired the car.
Attention to Detail and Specialist Workmanship
Specialists procured many original, factory NOS parts, including European-specification headlamps. Upholstery work was completed by Jon Cumpton, who used ten hides tanned in the traditional vegetable dyeing technique. The leather features a unique grain and was meticulously fashioned with hand-punched perforations. This exceptional level of detail is further complemented by color-matched, factory-style fitted luggage.
Performance Specifications and Technical Upgrades
The 300 SL Roadster features a dry-sump 3,286 cc DOHC V-12 engine rated at 300 bhp. Power is managed through a five-speed manual transaxle for superior weight distribution. Enhancements include a constant-run Bosch electric fuel pump pack and a 123ignition system. A more powerful Bosch 38-amp generator was also installed. This ensures reliability without compromising the sporting nature of the original.
Best of Show Recognition
Upon completion of the extensive refurbishment in early 2024, the stunning Mercedes-Benz won Best of Show at the 2025 Arizona Concours d’Elegance. This accolade recognizes the immense quality and accuracy of the restoration. The immaculate car is accompanied by an extensive photo file and restoration invoices.
Summary of the Magnificent 300 SL Roadster
This 1957 Mercedes-Benz 300 SL Roadster is a magnificent example of Stuttgart’s celebrated convertible. Its numbers-matching status, rare original color scheme, and Best of Show distinction make it exceptional. Documented with a short ownership chain and comprehensive restoration files, this roadster is ideal for the most discerning marque collector.
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Source: rmsothebys.com
