Legacy Metrics

1937 Alfa Romeo 8C 2900 B Lungo Spider

412011roadItaly
Engine
2.9L twin-supercharged DOHC straight-eight

Alfa Romeo 8C 2900 B chassis 412011, one of only 38 produced, was built in 1937 with a long-chassis (Lungo) configuration and delivered new with bespoke Karosseriewerk Aug Nowack cabriolet coachwork commissioned for its first owner in northern Germany — making it uniquely the only 2900 bodied in Germany from new. Its 2,905 cc twin-supercharged double-overhead-cam engine derives directly from the 1934 Tipo B (P3) racing car. After wartime obscurity, a period in American ownership, and an engine swap, the car passed through several hands before a lengthy restoration was completed in the late 2000s by the Black family with specialist assistance. It retains rare magnesium-alloy gearbox/differential housing, numerous original numbered components, and its original Nowack body, while currently wearing period-style Zagato-attributed coachwork.

Ownership

  1. Auction sale
    Sold £2,817,500 (≈ $3.52M)

    RM Sotheby's catalogue lot →

  2. 1937 →Factory delivery
    Ernst Carstens
    partial documentation

    Head of a family ceramics enterprise near Hamburg; commissioned local coachbuilder Nowack to construct a two-seat cabriolet body. The car may have remained with the Carstens family through the war years, evidenced by a photograph taken at the Nürburgring in 1951 wearing pre-1956 British Zone Hamburg registration plates.

  3. → 1952Acquisition unknown
    Film studio in Darmstadt
    partial documentation

    Reportedly owned by a film production company based in Darmstadt; sold the car on by 1952. By this stage the original 2900 engine had been replaced with a 6C 2500 unit.

  4. 1952 →Private sale
    David Holtorf
    partial documentation

    US Air Force serviceman stationed in West Germany who purchased the car and had it shipped to New York, then drove it to his home in Valparaiso, Indiana. Eventually sold due to insufficient funds for upkeep.

  5. → 1978-05-01Acquisition unknown
    Bill Knauz
    partial documentation

    Took over the challenging restoration project; corresponded with historian Simon Moore in May 1969 regarding progress. The chassis was restored by the time Moore inspected the car in 1971, though a complete engine remained unfinished.

  6. 1978-05-01 →Private sale
    Massimo Colombo
    partial documentation

    Italian motor trade specialist who acquired the car when it returned to Europe; sourced a pair of correct Roots-type superchargers during his ownership.

  7. Date unknownAcquisition unknown
    Various owners in the Chicago area
    none documentation

    The car passed through multiple undocumented private hands in the greater Chicago region before reaching Paul Schreiber.

  8. Date unknownAcquisition unknown
    Paul Schreiber
    partial documentation

    Began a restoration effort that exceeded his capabilities, though he did source a number of correct 2900 engine components during this time.

  9. Date unknownPrivate sale
    David Cohen
    partial documentation

    Purchased from Colombo; tenure details are limited in the available record.

  10. Date unknownAcquisition unknown
    David Black
    partial documentation

    Noted Alfa Romeo specialist and restorer who acquired the car in the early 1980s. Operating under the then-current belief that the Nowack body was not original and the chassis had been stretched, he chose to fit a different sporting spider body. The restoration was halted by his death and subsequently completed with assistance from several collaborators in the late 2000s.

  11. Date unknownInheritance
    Black family
    partial documentation

    Retained the car following David Black's passing and saw the restoration through to completion; actively used the car at VSCC events in the UK for approximately four decades of combined family ownership.

Competition

  1. 1951
    Nürburgring visit

    The car was photographed at the Nürburgring circuit bearing pre-1956 British Zone Hamburg plates; the nature of any competitive participation on this occasion is unconfirmed.

  2. Vintage Sports-Car Club
    VSCC events (UK)

    Following completion of the restoration in the late 2000s, the Black family campaigned the car at multiple VSCC events in Britain.

Maintenance & restoration

  1. 1938Inspection
    Alfa Romeo (Portello factory)

    Car was received at the Alfa Romeo factory with its Nowack coachwork in place and weighed; recorded weight of 1,462 kg.

    This visit provides factory documentation confirming the Lungo chassis configuration.

  2. 1938Service
    Alfa Romeo (Portello factory)

    The car was returned to the Alfa Romeo factory for routine servicing.

  3. 2025Engine rebuild
    Jim Stokes Workshops

    Substantial maintenance work carried out, culminating in a full engine rebuild; an invoice for the work is held on file.

    During this work, Jim Stokes Workshops confirmed the identity of the engine crankcase (believed to originate from chassis 412027) and the current block number (422031).

  4. Modification

    Original 2900 engine removed and replaced with a unit from the 6C 2500; this had occurred by the time the car was with the Darmstadt film studio circa 1952.

    The circumstances and timing of the engine swap are not recorded.

  5. Restoration

    Partial restoration attempt begun by Schreiber; the chassis was eventually fully restored, but assembling a complete correct engine remained unresolved when Simon Moore inspected the car in 1971.

    Bill Knauz subsequently took on the project; correct Roots superchargers were later sourced by Massimo Colombo.

  6. Restoration

    David Black initiated a full restoration intended to convert the car to what he understood to be its original short-chassis Spider configuration, fitting a period body attributed to Zagato that was sourced during the restoration of an 8C 2300. Work was interrupted by Black's death.

    The restoration was later completed with assistance from Jim Stokes, Bill Summers, and Keith Roach, concluding in the late 2000s.

  7. Restoration
    Jim Stokes Workshops

    Completion of the restoration following David Black's death, undertaken with the involvement of specialist Jim Stokes and associates Bill Summers and Keith Roach; finished in the late 2000s.

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.