Legacy Metrics

1931 Bentley 4½ Litre Supercharged Birkin Le Mans Replica

MS 3942roadUnited Kingdom
Engine
4.5L SOHC inline-four with Amherst Villiers Roots-type Mk IV supercharger, 182 bhp at 10 lbs boost and 3,900 rpm
Colour
Eggshell black

A 1931 Bentley 4½-Litre Supercharged model, chassis MS 3942, is one of the 50 factory-built Blower Bentleys produced to satisfy Le Mans homologation requirements. Bodied by Vanden Plas to a distinctive two-door open touring design with flared wings — one of only three built to this pattern — it was delivered through Jack Barclay in late 1931. Its documented history includes a Brooklands race victory in 1938 under Sir Westrow Hulse, a post-war restoration by Sydney Lawrence and Vanden Plas, and subsequent ownership by noted American collectors Fred Simeone and Virgil Millett. The car retains its Amherst Villiers Roots-type Mark IV supercharger and is eligible for major historic events including the Mille Miglia.

Ownership

  1. 2019-08-15Auction sale
    Sold US$1,500,000

    Bonhams catalogue lot →

  2. 1931-03-01 → 1931-12-01Factory delivery
    Jack Barclay
    full documentation

    London-based Bentley dealer who took the chassis as stock and commissioned Vanden Plas coachwork; sold the car to the first private buyer in December 1931.

  3. 1931-12-14 → 1932Private sale
    David Baker
    full documentation

    Resident of Letcombe Manor; received a five-year factory guarantee dated 14 December 1931 but returned the car to the dealer within weeks.

  4. 1932-02-01 →Private sale
    French and Foxwell
    partial documentation

    Surrey-based firm acting as intermediaries, believed to have been agents on behalf of the next owner, Mr. Bantoft.

  5. 1934 → 1934Acquisition unknown
    H.M. Bentley and Partners
    partial documentation

    Offered the car for sale in 1934, with a listing appearing in The Autocar on 20 July of that year; this issue contains the earliest known photograph of the car in original form.

  6. 1937 →Acquisition unknown
    Sir Westrow Hulse
    full documentation

    Sporting owner who raced the car at Brooklands; the flared wings had been swapped for lightweight cycle-type fenders by this period, and a period photograph of him with Lady Hulse and the car is held in the BRDC archive.

  7. Date unknownPrivate sale
    Mr. Bantoft
    partial documentation

    Described as the car's second private owner; acquired through the French and Foxwell agency.

  8. Date unknownAcquisition unknown
    Victor Doland
    full documentation

    Post-war owner who commissioned a restoration by Sydney Lawrence and Vanden Plas, documented in a February 1947 issue of The Autocar; the car was adapted to ease driving for Mr. Doland, who had survived polio, including fitting an ENV Preselector gearbox.

  9. Date unknownAcquisition unknown
    Fred Simeone
    partial documentation

    Named in the sale highlights as a prior owner; no further detail provided in the available prose.

  10. Date unknownAcquisition unknown
    Virgil Millett
    partial documentation

    Named in the sale highlights as a prior owner; no further detail provided in the available prose.

Competition

  1. 1938-04-18
    Easter Short Handicap, Brooklands
    Driver: Sir Westrow Hulse1st

    Described as the car's standout competitive achievement during Sir Westrow Hulse's ownership.

Maintenance & restoration

  1. 1933
    Modification

    A Cambridge water temperature gauge and a six-inch rev counter were installed, as noted in the service record.

  2. 1947Restoration
    Sydney Lawrence and Vanden Plas

    Comprehensive post-war rebuild carried out by Sydney Lawrence and Vanden Plas, incorporating racing-oriented upgrades including additional dampers and a Birkin-style boost gauge. The car was also modified for its owner's physical needs, with an ENV Preselector gearbox fitted and further chassis adjustments made to ease driving.

    The restoration was the subject of a feature article titled 'Return to Glory' published in The Autocar in February 1947.

Are you the owner of this car?

This car's public record is built from its auction and competition history. Register your ownership and privately add your own records to make it a verified Legacy Metrics passport — provenance that backs your car's value at sale and gives your insurer evidence to price against. Roy reviews and verifies every registration personally.

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.