1930 Alfa Romeo 6C 1750 Gran Sport Testa Fissa

Offered by Bonhams | Carmel, California | August 19, 2022

Alfa Romeo’s 6C 1750 was a very successful racing car in its day, racking up victories at the Mille Miglia, Targa Florio, 24 Hours of Spa, and Grands Prix all over Europe. If it had speed on track with other cars, why wouldn’t it have speed on a track by itself?

This car is believed to have been ordered new by a Brooklands racing driver as a rolling chassis that was test driven at the factory before being returned to the U.K. Once there, it was fitted with an aluminum body co-designed by three-time Land Speed Record holder George Eyston. The Alfa’s supercharged 1.7-liter inline-six made 102 horsepower in Gran Sport “Testa Fissa” form. This one is rated at 140 horsepower with some slight modern modifications.

Eyston set multiple records in the car during 1930 at Brooklands. A later owner removed the body, which had been damaged by that point, so the one it wears today is a recreation. This beastly looking Alfa is a throwback to the days of insanely dangerous speed record chasing. You can read more about it here.

Update: Not sold.

1929 Alfa Romeo 6C 1750 Supercharged Super Sport Spider

Offered by Bonhams | London, U.K. | December 7, 2019

Photo – Bonhams

The Alfa 6C 1500 gave way to the 6C 1750 in 1929. Displacement, obviously, increased and the straight-six engine jumped to 1,752cc. Six different series of the 1750 were produced between 1929 and 1933.

Within those six series were an array of different models. The Super Sport, which was available in both supercharged and non-supercharged form, was only available in 1929 as a “Series III” model. For 1930, it became the Gran Sport, all of which carried a supercharger. This Supercharged Super Sport made 85 horsepower when new.

This car carries coachwork from Zagato and it does not appear to have been fully restored. This 6C 1750 Series III Super Sport is one of 112 built and should bring between $1,000,000-$1,600,000. Click here for more info and here for more from this sale.

Update: Not sold.