Legacy Metrics

1955 Ferrari 121 LM

0546 LMracingItaly
Engine
4.4L straight-six with three side-draught Weber carburettors, 360 bhp

Ferrari 121 LM chassis 0546 LM is one of only four examples of this rare six-cylinder racing Ferrari ever built, and one of two cars converted from 118 LM specification by the factory. Displacing 4.4 litres and producing around 360 bhp, it raced at both the 1955 Mille Miglia as a Scuderia Ferrari works entry and the 1955 Le Mans 24 Hours before passing to American ownership. It gained further notoriety when driver Ernie McAfee was fatally injured at the 1956 Del Monte Trophy at Pebble Beach, an accident that ended racing at that venue permanently. The car retains its matching-numbers engine bearing its Le Mans scrutineering stamp.

Ownership

  1. Auction sale
  2. Auction sale
    Sold €5,742,500 (≈ $6.32M)

    RM Sotheby's catalogue lot →

  3. → 1955Factory delivery
    Scuderia Ferrari
    partial documentation

    Factory works team that campaigned the car at the 1955 Mille Miglia and Le Mans before converting it from 118 LM to 121 LM specification.

  4. 1955 →Acquisition unknown
    William Doheny
    partial documentation

    CEO of Superior Oil who retained the car after the fatal Pebble Beach accident and undertook a restoration over approximately two years. The car remained with his family for roughly two decades after he acquired it.

  5. → 1997Acquisition unknown
    Bill Ziering
    partial documentation

    Los Angeles-based owner who campaigned the car at Monterey historics multiple times over roughly two decades and also showed it at several concours events including Pebble Beach in 1975 and 1976.

  6. 1997 →Private sale
    Current owner
    partial documentation

    Kept the car in a private collection largely off public display; it had one competitive outing at Lime Rock Park in 1999.

  7. Date unknownInheritance
    Doheny family
    partial documentation

    Following William Doheny, the car stayed within the family for around twenty years, during which his stepson Chris Cord raced it at the inaugural Monterey historic races in 1974.

Competition

  1. 1955
    1955 Mille Miglia
    Driver: Paolo MarzottoDNF — tire failure

    Entered as a Scuderia Ferrari works car; a blowout at high speed during the opening stage ended the run. The car was subsequently returned to the factory for conversion to 121 LM specification.

  2. 1955
    1955 Le Mans 24 Hours
    Driver: Maurice TrintignantDNF — mechanical failure

    Co-driven by Harry Schell; the car retired in the tenth hour due to engine trouble. Sister car driven by Castellotti set the fastest practice lap and topped 181 mph on the straight.

  3. 1956-04-01SCCA
    Del Monte Trophy, Pebble Beach
    Driver: Ernie McAfeeDNF — fatal accident

    On lap 33 a missed downshift caused the car to strike a tree; the driver was killed on impact. Racing at Pebble Beach was subsequently prohibited.

  4. 1974
    1974 Monterey Historic Automobile Races
    Driver: Chris Cord

    First appearance at the inaugural Monterey historic meeting, driven by William Doheny's stepson. Stated to be the only year the car competed there under Doheny family ownership.

  5. 1975
    Pebble Beach Concours d'Elegance

    Exhibited by Bill Ziering during his ownership period.

  6. 1976
    Pebble Beach Concours d'Elegance

    Second consecutive Pebble Beach concours appearance under Ziering's ownership.

  7. 1999-06-01Ferrari North America Historic Challenge
    Ferrari North America Historic Challenge, Lime Rock Park
    Driver: Todd Morici

    Only competitive outing recorded under the current owner's stewardship.

Maintenance & restoration

  1. 1955Modification
    Ferrari factory

    Following retirement at the Mille Miglia, the factory converted the car from 118 LM to full 121 LM specification, fitting the larger six-cylinder engine and associated components.

    The conversion was carried out prior to the 1955 Le Mans 24 Hours entry.

  2. 1956
    Restoration

    Substantial repair and restoration work undertaken by William Doheny after the car sustained severe accident damage in the fatal April 1956 Pebble Beach crash; completed over approximately two years. Work apparently resulted in the loss of the traditional chassis stamping.

    The engine retained its matching-numbers status and Le Mans scrutineering stamp throughout; the gearbox is also matching numbers.

Are you the owner of this car?

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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.