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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
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 Three/Four Passenger Touring Chassis#: 33567 Sold for USD$24,640 2024 Bonhams : Gilded Age | ![]() ![]() |
1911 Cadillac Model 30 Roadster Sold for USD$44,000 2022 RM Sothebys : The Hershey Auction | ![]() ![]() |
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 Demi Tonneau Chassis#: 50361 Sold for USD$99,000 2005 Vintage Motor Cars at Amelia Island | ![]() ![]() |
Cadillac Model 30s That Failed To Sell At Auction
1911 Cadillac Model 30's that have appeared at auction but did not sell.
Vehicle | Chassis | Event | High Bid | Est. Low | Est. High |
---|---|---|---|---|---|
1911 Cadillac Model 30 Four-Passenger Demi-Tonneau | 33372 | 2021 RM Sothebys : Hershey | $90,000 | $110,000 |
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1911 Cadillac Model 30
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