Legacy Metrics

1976 Inaltera GTP-Cosworth

001

The Inaltera GTP chassis 001 is the first of three prototype racing cars constructed by Jean Rondeau and his team under the backing of Inaltera, a French wallpaper manufacturer. Unveiled at a Paris media event in February 1976, it served as a test and spare car at Le Mans that year before racing in 1977 under number 88, driven by Jean Rondeau and Jean Ragnotti to fourth overall and first in class — the top French-built finisher that year. Retained by its 1977 acquirer ever since, it has seen only occasional use and comes with an extensive spare-parts inventory and documented history file.

Ownership

  1. Auction sale
    Sold €374,000 (≈ $411K)

    RM Sotheby's catalogue lot →

  2. 1961 →Factory delivery
    Jim Hall
    full documentation

    Hall commissioned the car from Troutman & Barnes at a cost of $16,500 for the 1961 season, naming it Chaparral after a West Texas bird. He campaigned it extensively through 1963.

  3. Date unknownAcquisition unknown
    Jack Boxstrom
    partial documentation

    Boxstrom raced the car in historic competition, winning multiple times at the Lime Rock Festival over several recent years.

Competition

  1. 1961
    San Francisco Examiner Pacific Grand Prix
    Driver: Jim Hall7th Overall in first heat; DNF in second heat

    Hall was running 3rd when an oil-spill incident sent him off the road; he recovered to 7th in the opening heat but an engine failure ended his race in the second heat.

  2. 1961-06-01SCCA
    SCCA National, Laguna Seca
    Driver: Jim Hall2nd Overall

    A broken valve rocker prevented what might have been the car's first overall victory, leaving Hall behind Sargent's Birdcage Maserati.

  3. 1961-06-05SCCA
    SCCA Race, Riverside
    Driver: Jim Hall

    Unpainted prototype test outing; Hall posted a 2:03 lap, close to Gurney's Lotus 19 record of 2:00.93.

  4. 1961-10-15
    Los Angeles Times Grand Prix, Riverside
    Driver: Jim Hall3rd Overall

    Hall qualified on the second row alongside Gurney; Moss, Gurney, and McLaren all retired, allowing Hall to finish behind Brabham's winning Cooper Monaco.

  5. 1961-12-10
    Nassau Tourist Trophy
    Driver: Jim HallDNF — engine failure

    Hall briefly led the race after passing Moss on lap 5, but a misfire and suspension bottoming allowed Gurney through before the engine failed.

  6. 1962-02-11
    Daytona
    Driver: Jim Hall3rd Overall

    Hall battled Phil Hill at the front but could not match Gurney's Lotus 19; credited with third overall by Falconer and Nye's Chaparral reference work.

  7. 1962-03-01
    12 Hours of Sebring
    Driver: Jim Hall6th Overall, 1st in C/Modified class

    Hall initially co-drove chassis 003 with Chuck Daigh but that car retired after 8 hours with a broken steering knuckle; Hall then co-drove chassis 001 as car number 10 to sixth overall and a class victory.

  8. 1963
    12 Hours of Sebring
    Driver: Jim Hall

    Final competitive outing for chassis 001 alongside its sister car; both cars featured revised FIA-specification bodywork and Chaparral 2-style nose sections.

  9. Lime Rock Festival
    Driver: Jack BoxstromMultiple wins

    Boxstrom piloted the car to repeated historic race victories at Lime Rock over several recent years.

Maintenance & restoration

No maintenance or restoration records.

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.