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1911 Cadillac Model 30 background image

1911 Cadillac Model 30 Roadster

  • Chassis Number: 33567
  • Engine Number: 55571
1911 Cadillac Model 30 Navigation
Cadillac was under the guidance of its founder, Henry Martyn Leland, and his son Wilfred in 1909 and was in its second year as part of William Crapo Durant's General Motors. It was the first year of the four-cylinder Model 30 and would remain the sole model in Cadillac's catalog for the next six years. This was not the company's first four-cylinder model, as the four-cylinder Model D was had been introduced in 1905. The design of the engine featured four individual cylinders with copper water jackets and a variable valve lift throttle system that mimicked aspects of the company's singles' design and construction.

During the production lifespan of the Model 30, it would receive numerous improvements, including to the engine, with its stroke increasing in size by 1.25 inches, resulting in a larger engine displacement and an increase in brake horsepower (albeit, the calculated rating stayed the same). The Model 30 is famously remembered for introducing Delco's 'Self Starter' system in 1912.

Chassis 33567
This particular Cadillac Model 30 Three/Four Passenger Touring was delivered on May 5, 1911, to a customer in New York, New York. It has the enlarged 4 ½' 'square' bore and stroke dimensions, resulting in a 10 brake horsepower increase over the previous year.

The two-passenger coachwork with a mother-in-law seat is finished in dark blue livery with ivory wheels and chassis.

This Model 30 was once owned by Henry Austin Clark Jr., who discovered it on the farm behind the Big Duck, a Long Island landmark in Flanders, New York. The car was soon sold to Ken Rohl, who treated it to a restoration. Later, the car was traded back to Clark in exchange for a Thomas. It was shown in Clark's Long Island Automobile Museum until its closure in 1963.

At the museum's dispersion auction, the car was sold to Roger Feris Sr., who retained it until 2013.

By Daniel Vaughan | Feb 2025

2024 RM Sothebys : Hershey

Pre-Auction Estimates :
USD $40,000-USD $60,000 
Sale Price :
USD $41,250

2024 Bonhams : Gilded Age

Pre-Auction Estimates :
USD $40,000-USD $50,000 
Sale Price :
USD $24,640

1911 Cadillac Model 30 Auction Sales

Recent Sales of the Cadillac Model 30

(Data based on Model Year 1911 sales)
1911 Cadillac 'Thirty' Roadster
Chassis#: 33567
Sold for USD$41,250
  2024 RM Sothebys : Hershey
1911 Cadillac Model 30 image  1911 Cadillac Model 30 image  
1911 Cadillac Model 30 Three/Four Passenger Touring
Chassis#: 33567
Sold for USD$24,640
  2024 Bonhams : Gilded Age
1911 Cadillac Model 30 image  1911 Cadillac Model 30 image  
1911 Cadillac Model 30 Roadster
Sold for USD$44,000
  2022 RM Sothebys : The Hershey Auction
1911 Cadillac Model 30 image  1911 Cadillac Model 30 image  
1911 Cadillac 40/50hp Model 30 Side-entrance Tonneau Car
Chassis#: 59483
Sold for USD$57,218
  2017 Bonhams : The Beaulieu Sale
 
1911 Cadillac Model 30 Demi-Tonneau
Chassis#: 50361
Sold for USD$79,200
  2010 RM Auctions - Vintage Motor Cars of Meadow Brook
1911 Cadillac Model 30 image  1911 Cadillac Model 30 image  
1911 Cadillac Model 30 Demi Tonneau
Chassis#: 50361
Sold for USD$99,000
  2005 Vintage Motor Cars at Amelia Island
1911 Cadillac Model 30 image  1911 Cadillac Model 30 image  

Cadillac Model 30s That Failed To Sell At Auction

1911 Cadillac Model 30's that have appeared at auction but did not sell.
VehicleChassisEventHigh BidEst. LowEst. High
1911 Cadillac Model 30 Four-Passenger Demi-Tonneau333722021 RM Sothebys : Hershey $90,000$110,000

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1911 Cadillac Model 30

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Other Cadillac Model 30 model years

1911 Cadillac Model 30 Vehicle Profiles

1911 Cadillac Model 30 vehicle information
Roadster
Chassis #: 33567
Engine #: 55571
1911 Cadillac Model 30 vehicle information
Roadster
Engine #: 59268
1911 Cadillac Model 30 vehicle information
Demi-Tonneau
Chassis #: 33372
Engine #: 58750
1911 Cadillac Model 30 vehicle information
Touring
Chassis #: 53029
1911 Cadillac Model 30 vehicle information
Touring
Chassis #: 58609
Engine #: 31319

Vehicle information, history, and specifications from concept to production.