1957 Mercedes-Benz 300 SL Roadster
- Engine
- 3.0L SOHC inline-six, 215 bhp (DIN) / 240 hp (SAE)
- Colour
- Midnight blue with matching wheels

Chassis 7500089 is among the earliest Mercedes-Benz 300 SL Roadsters ever built — the 13th recorded production example and plausibly one of the first ten delivered to the United States. Completed at the factory on 28 June 1957, it left in original black-over-red livery and has a long documented history, including a prolonged period of storage before emerging as a barn find in Ohio. A comprehensive frame-off restoration completed in 2005 by Classic European Restorations resulted in multiple concours awards, and a subsequent freshening in 2013 brought further recognition at the inaugural Pinehurst Concours d'Elegance.
Ownership
- —Auction saleSold US$1,320,000
- 1957-07-31 →Factory deliveryAmerican distributor for Mercedes-Benzfull documentation
Vehicle delivered from the factory to the US distributor at the end of July 1957; factory build sheet and heritage certificate from Mercedes-Benz Classic confirm delivery details.
- 2003-11-01 → 2008Private saleJay McDonaldpartial documentation
Collector who had spent over a year seeking a suitable example; commissioned a comprehensive frame-off restoration by Classic European Restorations in Escondido, California, completed in summer 2005.
- 2008 →Private saleThomas McLeodpartial documentation
Acquired the concours-winning car from McDonald and subsequently sold it to the consignor.
- Date unknownAcquisition unknownFirst US private ownerpartial documentation
One of reportedly two known prior owners before the barn-find discovery; the car at some point received a gold repaint.
- Date unknownAcquisition unknownSecond US private ownerpartial documentation
Reportedly undertook some restoration work in 1994; the car was later found in Ohio in long-term storage with its engine disassembled in the luggage compartment.
- Date unknownPrivate saleCurrent consignorpartial documentation
Dedicated vintage sports car collector who researched the car's build history in depth and had the restoration freshened in early 2013 by specialist Mark Allin of Rare Drive in New Hampshire.
Competition
- 20062006 Los Angeles Concours d'EleganceBest in class
First major concours appearance following completion of the frame-off restoration; award presented shortly after the refurbishment was finished.
- 20062006 Palos Verdes Concours d'EleganceBest in class
Companion concours appearance the same year as the Los Angeles event, also yielding a class victory.
- 2006Gullwing National Convention Concours, San DiegoBest of Show
Top award at the marque-specific national gathering held in San Diego, achieved during the same period of concours activity.
- 20132013 Pinehurst Concours d'EleganceClass award
Inaugural running of the Pinehurst event; award followed the restoration freshening carried out by Mark Allin of Rare Drive earlier that year.
Maintenance & restoration
- 1994Restoration
Some form of restoration work was reportedly carried out, details unspecified; the car was wearing gold paint at this time.
Mentioned only secondhand; no supporting documentation described in the catalogue prose.
- 2005RestorationClassic European Restorations (Brian Anderson)
Comprehensive frame-off refurbishment: body stripped via rotisserie media blasting with minor shaping corrections and refinished in midnight blue; chassis taken to bare metal and powder-coated; suspension, brakes, and rear axle rebuilt; engine and transmission fully disassembled and rebuilt using parts sourced partly from HK Engineering in Germany. Interior reupholstered in Parchment leather; all electrics, gauges, Becker radio, and ivory Bakelite steering wheel reconditioned; correct Rudge knock-off wheels supplied and painted to match bodywork; new matching luggage set fitted.
Work began after November 2003 acquisition and was completed during the summer of 2005. Additional mechanical and trim components were sourced from HK Engineering, Germany.
- 2013RestorationRare Drive (Mark Allin)
Careful freshening of the 2005 restoration, described as meticulous in scope, aimed at elevating presentation to the highest concours standard.
Commissioned by the consignor in early 2013; Mark Allin is a former long-serving employee of Paul Russell and Company with documented concours successes at Amelia Island, Cavallino, the FCA Nationals, Meadow Brook, and Pebble Beach.
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