Image credit: © conceptcarz.com (Reproduction Or reuse prohibited).

1929 Alfa Romeo 6C 1750 Navigation
This car was sold new on June 27, 1929, to Dr. Massimo Brigatti. One of only five Sport-bodied Afas, this is the earliest and also the oldest 1750 in the United States. It was purchased by Ralph Stein in 1936, and featured in all of his books. Mr. Lewis purchased the car in 2000, and it has undergone an extensive two-year restoration to its original glory.
This particular model was #3 in a series. The Spyder body was by Carrozzeria Sport SA of Milano, Italy. The car is one of only 64 produced without a blower and is the oldest unit in the United States.
The car was owned and raced by New York columnist and author Ralph Stein. He raced in early road races and hill climbs in the US.
This particular model was #3 in a series. The Spyder body was by Carrozzeria Sport SA of Milano, Italy. The car is one of only 64 produced without a blower and is the oldest unit in the United States.
The car was owned and raced by New York columnist and author Ralph Stein. He raced in early road races and hill climbs in the US.
No auction information available for this vehicle at this time.
1929 Alfa Romeo 6C 1750 Auction Sales
Recent Sales of the Alfa Romeo 6C 1750
(Data based on Model Year 1929 sales)
1929 Alfa Romeo 6C 1750 Super Sport Chassis#: 0312901 Sold for USD$692,500 2021 RM Sothebys : Monterey | ![]() ![]() |
1929 Alfa Romeo 6C 1750 Turismo by James Young Chassis#: 0411875 Sold for USD$252,554 2015 Historics at Brookland | |
1929 Alfa Romeo 6C 1750 SS Spider Chassis#: 0312901 Sold for USD$836,000 2014 Gooding & Company : Pebble Beach Concours | ![]() ![]() |
1929 Alfa Romeo 1750 SS Competition Tourer Chassis#: 0312906 Sold for USD$1,782,372 2012 Bonhams - Collectors' Motor Cars and Automobilia | |
1929 Alfa Romeo 6C 1750 SS Supercharged Spyder Chassis#: 0312897 Sold for USD$582,008 2012 Bonhams - Collectors' Motor cars and Automobilia at Goodwood | |
1929 Alfa Romeo 6C 1750 Turismo Chassis#: 6C0412061 Sold for USD$171,304 2011 RM Auctions - London | |
1929 Alfa Romeo 6C 1750 GS Sold for USD$854,340 2009 RM Auctions - Automobiles of London | |
1929 Alfa Romeo 6C 1750 3rd Series Turismo Drop Head Coupe Chassis#: 0412061 Sold for USD$143,000 2009 Pebble Beach Auction : Gooding & Company | ![]() ![]() |
Alfa Romeo 6C 1750s That Failed To Sell At Auction
1929 Alfa Romeo 6C 1750's that have appeared at auction but did not sell.
Vehicle | Chassis | Event | High Bid | Est. Low | Est. High |
---|---|---|---|---|---|
1929 Alfa Romeo 6C 1750 Super Sport Spider Coachwork by Zagato | 0312870 | 2025 Bonhams : Les Grandes Marques du Monde à Paris | $800,000 | $1,200,000 | |
1929 Alfa Romeo 6C 1750 Supercharged Super Sport Spider | 0312931 | 2019 Bonhams : The Bond Street Sale | $800,000 | $1,200,000 | |
1929 Alfa Romeo 6C 1750 SS 3e série Zagato | 0312955 | 2018 Artcurial : Retromobile | $900,000 | $1,300,000 | |
1929 Alfa Romeo 6C 1750 3e série Turismo par James Young | 6C 0412061 | 2017 Artcurial : Retromobile | $210,000 | $250,000 | |
1929 Alfa Romeo 6C 1750 Super Sport Supercharged Spider | 0312861 | 2016 Bonhams : The Monaco Sale | $1,800,000 | $2,400,000 | |
1929 Alfa Romeo 6C 1750 Super Sport | 0312905 | 2016 Rétromobile 2016 by Artcurial Motorcars | $1,350,000 | $1,550,000 | |
1929 ALFA ROMEO 6C 1750 SS | 0312901 | 2015 BarrettJackson Scottsdale | |||
1929 Alfa Romeo 6C 1750 Spyder Supersport | 0312961 | 2011 Bonhams Automobilia, Motos de collection et Automobiles d'exception au Grand Palais | $750,000 | $950,000 | |
1929 Alfa Romeo 6C 1750 SS Super Sport Two Seater | 0312901 | 2009 Greenwich Concours d'Elegance, Collectors' Motorcars and Automobilia |
Vehicles With Comparable Market Values
Similar sales to the $664,260 range.
1970 Maserati Ghibli 4.7 Spyder Chassis#:AM115S1185 Sold for $665,000 2025 Broad Arrow Auction : Amelia Island | |
1989 Mercedes-Benz AMG 300 CE 6.0 'Hammer' Chassis#:AMG124.22416026 Sold for $665,000 2025 Gooding & Company : Amelia Island | |
2022 Ford GT Carbon Series Chassis#:1FAGP9DW5NH200075 Sold for $670,760 2025 RM Sothebys : Paris | |
1965 LINCOLN CONTINENTAL CUSTOM CONVERTIBLE Chassis#:5Y86N415148 Sold for $660,000 2025 Barrett-Jackson : Scottsdale | |
2005 Ferrari Superamerica Chassis#:ZFFGT61A950143795 Sold for $665,000 2024 RM Sothebys : Monterey | |
2005 Mercedes-Benz CLK DTM AMG Coupe Chassis#:WDB2093421F165792 Sold for $665,000 2024 RM Sothebys : Monterey | |
1963 Rolls-Royce Silver Cloud III H.J. Mulliner Drophead Coupe Chassis#:LSCX789 Sold for $665,000 2024 Broad Arrow : Monterey | ![]() ![]() |
1997 Porsche 911 Turbo S Chassis#:WP0AC2992VS375702 Sold for $665,000 2024 Broad Arrow : Monterey | |
2020 Ferrari 488 Pista Chassis#:ZFF90HLA9L0253897 Sold for $665,000 2024 Broad Arrow : Monterey | |
1972 Ferrari Dino 246 GT Coachwork by Scaglietti Chassis#:03818 Sold for $665,000 2024 Gooding & Company : Pebble Beach | |
1967 Ferrari 330 GTC Coachwork by Pininfarina Chassis#:10309 Sold for $665,000 2024 Gooding & Company : Pebble Beach | |
1970 Chevrolet Chevelle LS6 Convertible Chassis#:136670b155423 Sold for $660,000 2024 Mecum : Indy | |
1984 Audi Sport Quattro Chassis#:WAUZZZ85ZEA905147 Sold for $665,000 2024 RM Sothebys : Arizona | ![]() ![]() |
1972 FERRARI 365 GTB/4 DAYTONA SPIDER SCAGLIETTI CONVERSION Chassis#:13353 Sold for $660,000 2024 Barrett-Jackson : Scottsdale AZ | |
1964 LINCOLN CONTINENTAL CUSTOM CONVERTIBLE Chassis#:4Y86N434680 Sold for $660,000 2024 Barrett-Jackson : Scottsdale AZ | |
1971 Plymouth Hemi Cuda Chassis#:bs23r1b227275 Sold for $660,000 2024 Mecum : Kissimmee | |
2021 Mercedes-AMG GT Black Series Project One Edition Chassis#:W1KYJ8BA7MA042580 Sold for $665,000 2023 RM Sothebys : Las Vegas | |
2022 McLaren 765LT Spider Chassis#:SBM14SCA1NW765173 Sold for $665,000 2023 RM Sothebys : Las Vegas | |
1958 CHEVROLET CORVETTE CUSTOM CONVERTIBLE Chassis#:J58S103962 Sold for $660,000 2023 Barrett-Jackson : New Orleans | |
1961 Ghia L 6.4 Chassis#:0306 Sold for $665,000 2023 RM Sothebys : Monterey | ![]() ![]() |
1929 Alfa Romeo 6C 1750
• Additional valuation insight and sales data• History
• Specifications
• Image gallery
• Other Alfa Romeo 6C 1750 model years