1934 Alfa Romeo Tipo B (P3) Monoposto, second-series wide-body

Operated as Alfa Romeo's unofficial racing team, running the car in the 1935 season under Scuderia Ferrari number 46 alongside other Tipo B chassis.

English engineer who raced the car at speed trials and hillclimbs including Brooklands; rebuilt the cylinder head and modified the radiator and exhaust after the original engine began to fail; later emigrated to Australia.

Wealthy British enthusiast who documented his ownership experience in a prominent magazine feature published in early 1948; the car remained in active use during this period.

Enthusiast owner who continued to use the car in competition through 1950.

New Zealand owner who promptly entered the car in domestic competition after acquiring it.

Lyttleton-based owner who restored the bodywork, reinstating the wider cockpit to match the original Scuderia Ferrari configuration, using sister chassis 50005 as a reference; a photographic record and inspection report document this work.

Described as one of Japan's most prominent collectors; the car was inspected by a recognised British motor racing authority during his ownership.

Well-known American collector who held the car for approximately seven years before selling.

Commissioned independent technical inspections from Hall & Hall in Lincolnshire and a senior British motoring historian after acquisition.

Christchurch-based owner; one of successive New Zealand enthusiasts who used the car on local circuits.

Christchurch-based owner; one of successive New Zealand enthusiasts who used the car on local circuits.

Held at Brno, Czechoslovakia; this is the one race in the 1935 campaign that can be definitively attributed to chassis 50006.

First event run by Ashby shortly after purchasing the car from Scuderia Ferrari.

McMillan entered the car immediately after acquiring it, running it in domestic New Zealand competition.

Ashby campaigned the car at various British venues including Brooklands over approximately two years following his purchase; covered by contemporary motoring press.

Formal condition and authenticity assessments were carried out by Hall & Hall of Lincolnshire and by a senior British motoring historian, confirming the car's largely factory-original component content.

The British historian involved had previously inspected the car during Hayashi's ownership, providing continuity of expert assessment.

During ownership in England a narrower body was constructed and fitted to the car, replacing the original wide Scuderia Ferrari cockpit.

Exact timing within the English ownership period is not specified in the source.

After the original cylinder block developed cracking, Frank Ashby fabricated and installed a replacement cylinder head and made alterations to the radiator and exhaust system.

Work carried out by Ashby himself during his ownership in the late 1930s.

Leon Witte restored the cockpit to its original wider Scuderia Ferrari configuration; only the central body section required replacement, with the remainder of the bodywork judged to be original. Sister car 50005, owned by Bill Clark, was used as a dimensional pattern.

Confirmed by a contemporary photograph of both cars together and by an inspection report on file.