1966 Porsche 906 Carrera Six Two-Seat Endurance Racing Coupé

Prominent Japanese racer who took factory delivery and campaigned the car extensively through the 1966 and 1967 Japanese racing seasons.

Entered the car under the Rolex Tudor Racing Team banner for much of the 1968 and 1969 seasons with various drivers.

Japan-based enthusiast driver who co-ran the car from 1970 with Bob Hathaway and continued campaigning it through at least the 1972 and 1973 seasons; also contributed race reports to European motoring press.

Yokohama-based Porsche enthusiast who in 1992 engaged the Stuttgart factory to conduct a sympathetic restoration; correspondence from Porsche dated December 1992 and July 1993 documents the scope of work carried out.

Season-closing result that completed a successful maiden year for the car.

First outing for the car after factory delivery; did not finish.

Second retirement of the debut season, contested the weekend after the Suzuka Clubman win.

First recorded victory for the car, at the Suzuka road circuit.

Contested the 60-lap sports car race in the Portuguese colony; finished behind race winner Mauro Bianchi driving a works Alpine-Renault.

Co-driven by Tadashi Sakai; forced to retire but awarded a classification.

Third consecutive victory of the 1967 season for the car.

Co-driven with Tanaka; described as the most prestigious event on the Japanese calendar, this was the fourth straight win of the season.

Mechanical issues forced retirement near the end of an otherwise brilliant season.

Co-driven by Jiro Yoneyama; retired from the race.

Co-driven by Jiro Yoneyama; contested under the Rolex Tudor Racing Team banner.

Future Japanese Formula 1 driver Hasemi took the opening win of the 1968 season.

Third successive victory of the early 1968 season, completing a hat-trick of wins.

Entered by the Tudor Racing Team; Takano's first win with the car.

Season-closing win at Fuji on 21 September 1969.

One of two third-place finishes recorded at Fuji during the 1969 season.

Second of two third-place finishes at Fuji in 1969.

Co-driven by Jiro Yoneyama for the Tudor Watch Racing Team; the car's second outright win in this prestigious event.

First outing of the 1970 season under new custodians Hathaway and Bellamy.

Best finish of the 1971 season.

Solo drive by Bellamy in an endurance event.

Opening round of the 1972 season.

Non-starter in this second Fuji 300Kms entry of the 1973 season.

Final known competitive outing for the car in period racing.

Porsche factory in Stuttgart-Zuffenhausen began a comprehensive evaluation: chassis frame was dismantled and measured for distortion resulting from extensive competition use, suspension was assessed and reset, and engine, gearbox, and bodywork were all examined.

Commissioned by owner Takashi Yasunaga; a factory letter dated 11 December 1992 documents this initial phase.

Porsche factory confirmed completion of chassis frame work and commencement of restoration to the moulded fibreglass coachwork. The engine was retained and rebuilt at the enlarged 2.5-litre capacity rather than returned to the original 2.0-litre specification, as the original crankcase was no longer obtainable.

A factory communication dated 16 July 1993 documented progress and explained the decision to retain the 2.5-litre engine configuration.