Legacy Metrics

1957 Mercedes-Benz 300 SL Roadster

198.042.7500603roadGermany
Engine
Inline-six, increased compression for 100-octane fuel, ~240 bhp (up 25 hp from coupe spec)
Colour
Black (DB 040)

A 1957 Mercedes-Benz 300 SL Roadster, chassis 7500603, built to U.S. specification and completed on 27 December 1957. Originally delivered in black over red leather with a Becker Mexico Radio, it spent its early years on the West Coast before receiving a concours-level restoration around 2000. Subsequent owners maintained it to a high standard, and it has twice completed the California Mille. The car retains matching chassis, body, and engine numbers and carries extensive documented service history.

Ownership

  1. Auction sale
    Estimate US$1,200,000 – US$1,400,000

    RM Sotheby's catalogue lot →

  2. Auction sale
  3. → 2015Acquisition unknown
    Chuck Mountain
    partial documentation

    Former engineer at Kar Kraft Engineering with involvement in Ford factory motorsport; commissioned a full concours-level restoration around 2000 using parts from Paul Russell and Company, employing a Mercedes-Benz Classic Center technician.

  4. 2015 →Private sale
    Previous owner seeking touring-event vehicle
    partial documentation

    Had the car comprehensively serviced and detailed by Canepa Design before taking delivery; later commissioned further mechanical and cosmetic work including a full exterior repaint through Virtuoso Performance and Coachwerks.

  5. Date unknownFactory delivery
    Studebaker-Packard Corporation, San Francisco branch
    partial documentation

    Served as the authorized Mercedes-Benz distributor in the region; vehicle was shipped from Hamburg and received at this branch on the West Coast.

  6. Date unknown
    West Coast owner or owners (presumed)
    none documentation

    Early ownership history assumed to have been on the West Coast of the United States; no documentation or names provided in the source.

Competition

  1. 2015California Mille
    2015 California Mille
    Completed

    Car's first participation in this long-distance touring event shortly after the most recent owner acquired it; returned to Canepa Design for additional sorting afterward.

  2. 2016California Mille
    2016 California Mille
    Completed

    Second successful completion of the event by the same owner, confirming the car's suitability for long-distance touring use.

Maintenance & restoration

  1. 2000Restoration
    Chuck Mountain's facility (with Paul Russell & Company parts)

    Full concours-standard restoration carried out at Chuck Mountain's facility using parts sourced from Paul Russell & Company. A former Mercedes-Benz Classic Center employee was engaged to oversee the work.

    Car was driven only sparingly after the restoration was completed.

  2. 2015Service
    Canepa Design

    Comprehensive mechanical servicing and cosmetic detailing totalling more than 250 hours, carried out immediately before the 2015 owner took delivery.

    Located in Scotts Valley, California.

  3. 2015Service
    Canepa Design

    Additional sorting and mechanical attention following the car's first California Mille participation.

    A follow-up visit to the same workshop after the 2015 event.

  4. 2019Mechanical
    Virtuoso Performance

    Thorough no-expense-spared mechanical overhaul covering the ignition, timing, braking, and fuel-delivery systems.

    Located in Hayward, California.

  5. 2019Bodywork
    Coachwerks

    Exterior repainted in the factory-correct black (DB 040) colour.

    Located in Victoria, British Columbia, Canada.

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Each chassis record is compiled from public auction archives and links to its source material. Ownership, competition and maintenance entries are extracted from those catalogue listings by an LLM, which can make mistakes — please contact us with any corrections. The summary is Legacy Metrics’ own writing; we do not reproduce catalogue text.

“Full” and “partial” documentation labels indicate how well each entry is corroborated in the underlying sources, not an audit of the car’s physical paperwork. Names of recent or living owners are withheld for privacy.