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1930 Alfa Romeo 6C 1750 GS Drop Head Coupe

  • Coachwork by Castagna
  • Chassis Number: 121215033
  • Engine Number: 121215033
This six-cylinder engine found in the 1750 was a dual overhead cam unit that was enhanced with the help of a Roots-Type supercharger. The 1750 had an advanced chassis and an unrivalled competition record. The 1750's were also renowned for their exceptional styling, having received coachwork from Europe's most exclusive custom coachbuilders.

This example (a 1933 model that is titled as a 1930), chassis number 121215033, is a very early 6th Series Grand Sport, of which only 44 were built. Introduced in 1933, these late-production 1750s received many of the features found on the new 6C 1900 GT, including a boxed chassis, third- gear synchromesh, a slightly taller radiator and updated instrumentation. The result of these improvements added greater comfort and mechanical sophistication, while retaining the sporting characteristics of the early models.

Castagna of Milan was tasked with outfitting this car with a Drop Head coupe body, reminiscent of the contemporary long-chassis 8C 2300s. In the back are dual rear-mounted spares and long, sweeping fender lines.

The car was discovered in the British Zone following World War II. It is believed that the car was built for a customer in Germany. The car was fortunate to survive the duration of the war, though it did receive a hole in the middle of the passenger door, which was caused by artillery fire.

The car was imported in the summer of 1955. On August 4th it was registered OMJ 480 to Chiltern Cars Ltd. and by the end of the month, it had been sold to Robert Thomas. It was acquired by George Simpson of Kent on September 5th of 1957 only to sell it to Frederick James Keeling a short time later. In June of 1959, it was acquired by Kenneth Koupal, by then the car had been refinished in red.

When Mr. Koupal moved to the United States, he brought with him. Once in the states, he dismantled the car with hopes of completing a comprehensive restoration. The car remained with him for more than four decades, though the restoration was never completed. The car was sold in 2002 to French collector Dr. Bruno Lafourcade.

Between 2003 and 2009, the car was given a complete restoration. Upon completion, the car was displayed at the 2010 Avignon Motor Festival as a tribute to Vittorio Jano's contributions to the centenary of Alfa Romeo.

The car was purchased by an American collector in 2010. The car is currently finished in black with contrasting red beltline and upholstery.

In 2012, this vehicle was offered for sale at the Gooding & Company auction in Scottsdale, Arizona. The car had an estimated value of $750,000 - $850,000. As bidding came to a close, the car had been sold for the sum of $781,000 inclusive of buyer's premium.

By Daniel Vaughan | Jan 2012

2012 Gooding and Company - The Scottsdale Auction

Pre-Auction Estimates :
USD $750,000-USD $850,000 
Sale Price :
USD $781,000

2010 RM Auctions - Sporting Classics of Monaco

Pre-Auction Estimates :
€550,000-€650,000 
Sale Price :
USD $744,688 (€ 560,000.00)

1930 Alfa Romeo 6C 1750 GS Auction Sales

Recent Sales of the Alfa Romeo 6C 1750 GS

(Data based on Model Year 1930 sales)
1930 Alfa Romeo 6C 1750 Gran Sport Spider in the style of Zagato
Sold for USD$390,000
  2022 RM Sothebys : Monterey
 
1930 Alfa Romeo 6C 1750 Grand Sport
Chassis#: 8513030/28
Sold for USD$1,323,087
  2015 Bonhams : Les Grandes Marques du Monde au Grand Palais
 
1930 Alfa Romeo 6C 1750 GS Testa Fissa
Chassis#: 8513089
Sold for USD$1,245,580
  2012 RM Auctions - London
 
1933 Alfa Romeo 6C 1750 Gran Sport Drop Head Coupe
Chassis#: 121215033
Sold for USD$781,000
  2012 Gooding and Company - The Scottsdale Auction
1930 Alfa Romeo 6C 1750 GS image  1930 Alfa Romeo 6C 1750 GS image  
1930 Alfa Romeo 6C 1750 GS Spider by Zagato
Chassis#: 8513064
Sold for USD$990,000
  2011 RM Auctions - Automobiles of Amelia Island
1930 Alfa Romeo 6C 1750 GS image  1930 Alfa Romeo 6C 1750 GS image  
1930 Alfa Romeo 6C 1750 GS by Castagna
Chassis#: 121215033
Sold for USD$744,688
  2010 RM Auctions - Sporting Classics of Monaco
1930 Alfa Romeo 6C 1750 GS image  1930 Alfa Romeo 6C 1750 GS image  
1930 Alfa Romeo 6C 1750 GS by Zagato
Chassis#: 8513064
Sold for USD$1,169,160
  2010 RM Auctions - Sporting Classics of Monaco
1930 Alfa Romeo 6C 1750 GS image  1930 Alfa Romeo 6C 1750 GS image  
1930 Alfa Romeo 6C 1750 GS Zagato
Chassis#: 8513064
Sold for USD$1,265,000
  2008 Gooding & Company
1930 Alfa Romeo 6C 1750 GS image  1930 Alfa Romeo 6C 1750 GS image  
1930 Alfa Romeo 6C 1750 GS Zagato
Sold for USD$1,107,000
  2008 Bonhams & Butterfields Sale of Exceptional Motorcars and Automobilia
1930 Alfa Romeo 6C 1750 GS image  1930 Alfa Romeo 6C 1750 GS image  
1930 Alfa Romeo 6C 1750 Series IV Grand Sport Spyder
Sold for USD$880,000
  2008 Worldwide Auctions - Houston Classic 2008
 
1930 Alfa Romeo 6C 1750 Grand Sport
Sold for USD$1,100,000
  2005 Worldwide Auctions - Houston Classic 2005
 

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

1930 Alfa Romeo 6C 1750 GS's that have appeared at auction but did not sell.
VehicleChassisEventHigh BidEst. LowEst. High
1930 Alfa Romeo 6C 1750 Gran Sport Spider85130332023 Bonhams : Quail $1,000,000$1,500,000
1930 Alfa Romeo 6C 1750 Gran Sport Fourth Series Testa Fissa Two Seater Sports85130252022 Bonhams : The Quail Auction $1,600,000$1,800,000
1930 Alfa Romeo 6C 1750 Gran Sport Spider in the style of Zagato85130532020 RM Sothebys : Shift/Monterey $700,000$900,000
1930 Alfa Romeo 6C 1750 Gran Turismo Series IV Spider in the style of Zagato86134812020 RM : The European Sale featuring the Petitjean Collection $400,000$450,000
1930 Alfa Romeo 6C 1750 Gran Sport Spider in the Style of Zagato85130342020 RM Sothebys : Paris $900,000$1,300,000
1930 Alfa Romeo 6C 1750 4th Series Supercharged Gran Sport Spider85130332019 Bonhams : Les Grandes Marques du Monde au Grand Palais $1,200,000$1,600,000
1930 Alfa Romeo 6C 1750 Gran Sport roadster Corsica85130492019 Artcurial : Retroobile $900,000$1,400,000
1930 Alfa Romeo 6C 1750 Gran Sport Spider85130012017 RM Sothebys : Villa Erba $2,200,000$2,600,000
1930 Alfa Romeo 6C 1750 Gran Sport Spider85130482016 RM Sotheby's : Monaco $900,000$1,200,000
1930 Alfa Romeo 6C 1750 Gran Sport Spider85130332012 Bonhams The Monaco Sale 'Les Grandes Marques à Monaco' $850,000$950,000
1930 Alfa Romeo 6C 1750 Gran Sport Spyder85130332011 Bonhams Automobilia, Motos de collection et Automobiles d'exception au Grand Palais $950,000$1,250,000
1930 Alfa Romeo 6C 1750 GT 4th/5th Series Tourer86135072010 Bonhams Goodwood Revival, Chichester, Sussex $100,000$130,000
1930 Alfa Romeo 6C 1750 4th Series GS Spider85130782010 Bonhams Automobiles d'Exception á Rétromobile $550,000$650,000

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1930 Alfa Romeo 6C 1750 GS vehicle thumbnail image  1930 Alfa Romeo 6C 1750 GS vehicle thumbnail image  
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1930 Alfa Romeo 6C 1750 GS vehicle thumbnail image  1930 Alfa Romeo 6C 1750 GS vehicle thumbnail image  

1930 Alfa Romeo 6C 1750 GS

Additional valuation insight and sales data
History
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Other Alfa Romeo 6C 1750 GS model years

1930 Alfa Romeo 6C 1750 GS Vehicle Profiles

1930 Alfa Romeo 6C 1750 GS vehicle information
Testa Fissa Spyder
Coachwork: A.E. Leadbetter
Designer: George Easton
Chassis #: 8513025
Engine #: 8513025
1930 Alfa Romeo 6C 1750 GS vehicle information
Spyder
Designer: Zagato
1930 Alfa Romeo 6C 1750 GS vehicle information
Drop Head Coupe
Coachwork: Castagna
Chassis #: 121215033
Engine #: 121215033
1930 Alfa Romeo 6C 1750 GS vehicle information
Spyder
Designer: Zagato
Chassis #: 8513045
Engine #: 8513045
1930 Alfa Romeo 6C 1750 GS vehicle information
Spyder
Designer: Zagato
Chassis #: 8513064
Engine #: 8513064
1930 Alfa Romeo 6C 1750 GS vehicle information
Spyder
Designer: Zagato
Chassis #: 8513053
1930 Alfa Romeo 6C 1750 GS vehicle information
Spyder
Designer: Zagato
Chassis #: 8513033
Engine #: 8513033