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1929 Duesenberg Model SJ Sweep-Panel Dual-Cowl Phaeton by LeBaron
United States • 9 Sept 2026
Vehicle Details
AI Listing Summary
This 1929 Duesenberg Model SJ boasts a significant racing history and a recent eight-year restoration, featuring a supercharged engine and LeBaron coachwork. It was featured at the 2013 Pebble Beach Concours d'Elegance and has spent time in notable collections, making it a rare and highly desirable classic.
Condition
8
The car has undergone an extensive eight-year restoration from 2018-2026, including a repaint, interior re-trim, and mechanical refreshes. While it has been meticulously restored to a high standard, the description mentions 'bodywork corrections' and the return of its chassis to original length with a donor frame section, indicating that while it's in excellent condition post-restoration, it's not in the 'pristine' state of a never-touched original.
/ 10
Transmission:
Manual
Chassis No:
2158
Odometer:
2,900 miles
Reg Number:
[Reg Number]
RHD/LHD:
LHD
TMU Lycoming 420ci DOHC Inline-Eight Centrifugal Supercharger Twin Stromberg UU-3 Carburetors "Ram's Horn" Intake Assembly Three-Speed Manual Transmission Black & Maroon Paint Maroon Leather Upholstery Black Convertible Top w/ Maroon Piping 19" Chrome Wire Wheels Dual Side-Mount Spares Servo-Assisted Hydraulic Drum Brakes Luggage Rack w/ Contoured Trunk
This 1929 Duesenberg Model J is one of approximately 481 chassis across all variants of the Model J platform built between 1928 and 1937 and was initially constructed as a naturally aspirated short-wheelbase example with sweep-panel dual-cowl phaeton bodywork by LeBaron.
Chassis 2158 is said to have been among several Model J show cars exhibited at the October 1929 Paris Salon de l’Automobile before being returned to the US, where it was purchased in New York by millionaire Argentinian racing driver Martín Máximo Pablo de Álzaga Unzué.
It is said to have been subsequently driven in various events by De Álzaga before an engine failure ...
Points of note
£864,470
Lowest Price (All Time)
£899,586
Median Price (All Time)
£934,701
Highest Price (All Time)
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Rare Sale
This vehicle comes to market rarely. In auction records we've only seen 2 sold before
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