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1931 Alfa Romeo 6C 1750 background image

1931 Alfa Romeo 6C 1750 Cabriolet

  • Coachwork by Castagna
  • Chassis Number: 10914408
1931 Alfa Romeo 6C 1750 Navigation
Originality is a quality that is often sought after with collector automobiles, and this Alfa Romeo 6C 1750GT still retains its original cabriolet body, which was fitted by Carrozzeria Castagna in 1931. It is believed that this vehicle was a gift to Tazio Nuvolari from the Alfa Romeo factory when new. Nuvolari was a very accomplished driver with a very successful racing career, with five European Championships for Alfa Romeo.

After World War II, the car was purchased by an American and brought to the United States. In the 1950s, it was purchased by Mr. Paul W. Hatmon of Independence, Missouri, who traded a Jaguar XK for the car. Mr. Earl Brown of Kentucky became the car's next caretaker in 1961. In the early 2000s, the car was sold to a collector in Italy. Since the acquisition, the car has been given a sympathetic restoration with the purpose of preserving the Alfa. The original green paint and a fragment of the lizard-patterned calfskin upholstery were used as a guide. The Castagna body number was found on various body panels and parts, another confirmation of the coachwork's originality. After the work was completed, the car was awarded 'Best of Show' at the 2009 Concours d'Elegance Trofeo Salvarola Terme, as well as the best pre-war car at the 2010 concours at San Pellegrino Terme and 'Best of Show' in the Pre-War Class at the Concorso d'Eleganza in Motion during the Vernasca Silver Flag in 2011.

Modern modifications made to the car include the electric cooling fan and a water temperature gauge. The car has a full set of tools, and documentation of the restoration process. Powering the car is a six-cylinder, dual overhead cam engine that offers 55 horsepower. There is a four-speed manual transmission and four-wheel drum brakes.

In 2012, the car was offered for sale at RM Auction's Monaco sale. The car carried a pre-auction estimated value of €325.000-€375.000. As bidding came to a close, the car had been sold for €336.000 inclusive of the buyer's premium.

By Daniel Vaughan | Jun 2012

2012 RM Auctions at Monaco

Pre-Auction Estimates :
€325,000-€375,000 
Sale Price :
USD $434,080 (€ 336,000.00)

1931 Alfa Romeo 6C 1750 Auction Sales

Recent Sales of the Alfa Romeo 6C 1750

(Data based on Model Year 1931 sales)
1931 Alfa Romeo 6C 1750 Gran Sport Spider by Zagato
Chassis#: 10814362
Sold for USD$1,902,648
  2025 RM Sothebys : Paris
 
1931 Alfa Romeo 6C 1750 Gran Turismo Compressore Series V by Touring
Chassis#: 6C101014859
Sold for USD$720,000
  2022 RM Sothebys : Monterey
1931 Alfa Romeo 6C 1750 image  1931 Alfa Romeo 6C 1750 image  
1931 Alfa Romeo 6C 1750 GTC
Chassis#: 101014832
Sold for USD$582,500
  2020 Bonhams : Quail Motorcar Auction
 
1931 ALFA ROMEO 6C 1750 5TH SERIES SUPERCHARGED GRAN SPORT SPIDER
Chassis#: 10814358
Sold for USD$2,805,000
  2017 Bonhams : Scottsdale, AZ
1931 Alfa Romeo 6C 1750 image  1931 Alfa Romeo 6C 1750 image  
1931 Alfa Romeo 6C 1750 Gran Sport Spider by Zagato
Chassis#: 10814313
Sold for USD$2,420,000
  2015 RM Sotheby's : Amelia Island
1931 Alfa Romeo 6C 1750 image  1931 Alfa Romeo 6C 1750 image  
1931 Alfa Romeo 6C 1750 Supercharged Gran Sport Spider
Chassis#: 10814356
Sold for USD$3,080,000
  2014 Bonhams - The Scottsdale Auction
1931 Alfa Romeo 6C 1750 image  1931 Alfa Romeo 6C 1750 image  
1931 Alfa Romeo 6C 1750 GT Cabriolet by Carrozzeria Castagna
Chassis#: 10914408
Sold for USD$434,080
  2012 RM Auctions at Monaco
1931 Alfa Romeo 6C 1750 image  1931 Alfa Romeo 6C 1750 image  
1931 Alfa Romeo 6C 1750
Chassis#: 10814368
Sold for USD$1,320,000
  2008 Gooding & Company
1931 Alfa Romeo 6C 1750 image  1931 Alfa Romeo 6C 1750 image  
1931 Alfa Romeo 6C 1750 Super Sport
Sold for USD$946,000
  2007 Gooding & Company
1931 Alfa Romeo 6C 1750 image  1931 Alfa Romeo 6C 1750 image  

Alfa Romeo 6C 1750s That Failed To Sell At Auction

1931 Alfa Romeo 6C 1750's that have appeared at auction but did not sell.
VehicleChassisEventHigh BidEst. LowEst. High
1931 Alfa Romeo 6C 1750 Series V Gran Sport108143492024 Gooding & Company : Pebble Beach $950,000$1,250,000
1931 Alfa Romeo 6C 1750 Gran Sport Spider by Zagato108143132023 RM Sothebys : Amelia Island $2,000,000$2,500,000
1931 ALFA ROMEO 6C 1750 SERIES V GRAN SPORT108143112022 Gooding & Company : Pebble Beach $2,700,000$3,200,000
1931 Alfa Romeo 6c 1750 GTC Fifth Series Cabriolet1010148322020 Bonhams : Amelia Island Concours $800,000$900,000
1931 Alfa Romeo 6C 1750 Series V Gran Sport108143492017 Gooding & Company : Pebble Beach $2,000,000$2,500,000
1931 Alfa Romeo 6C 1750 5e série à compresseur spider Gran SportAR 108 143142015 Bonhams : Les Grandes Marques du Monde au Grand Palais $1,800,000$2,400,000

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1934 Duesenberg Model SJ Convertible Sedan by LeBaron
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1931 Alfa Romeo 6C 1750 vehicle thumbnail image  1931 Alfa Romeo 6C 1750 vehicle thumbnail image  

1931 Alfa Romeo 6C 1750

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