Legacy Metrics

1971 March 712B Formula Atlantic

712-BM-12racingUnited Kingdom

The March 712M (chassis 712-BM-12) is a single-seater originally constructed for Formula Atlantic competition, a UK formula launched in 1971 bridging Formula 2 and Formula 3. The car was subsequently campaigned in Formula 2 specification using a Cosworth FVA engine before being returned to Atlantic configuration with a freshly built engine. It is accompanied by an HSCC Vehicle Identity Form and is presented as competition-ready.

Ownership

  1. 2024-02-23Auction sale
    Estimate £45,000 – £55,000

    Iconic Auctioneers catalogue lot →

  2. 2024-02-23Auction sale
    Estimate £45,000 – £55,000

    Iconic Auctioneers catalogue lot →

  3. 2024-02-24Auction sale
    Estimate £45,000 – £55,000

    Iconic Auctioneers catalogue lot →

  4. 2017 →Acquisition unknown
    Current vendor
    partial documentation

    Owner ran the car in F2 specification with an FVA engine for several years before commissioning its return to Formula Atlantic specification, including a new engine build.

Competition

No competition history extracted from the catalogue.

Maintenance & restoration

  1. Modification

    Car was converted from its original Formula Atlantic specification to Formula 2 configuration, fitted with a Cosworth FVA engine.

  2. Restoration
    Gathercole Race Engines

    Car returned to Formula Atlantic specification, with a complete new engine assembled for the purpose.

    Decision to revert prompted by the launch of a new dedicated series for these cars by Equipe Classic Racing.

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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.