Makes › Duesenberg › Model J/SJ Convertible Coupe by Walker-LaGrande · Coachbuilt Ultra Rare
Duesenberg
Model J/SJ Convertible Coupe by Walker-LaGrande
Newport-designed convertible coupe built by Walker (LaGrande); three built, chassis 2405 the only supercharged one
Still being researched: full specifications. Everything shown is checked against the cited sources. Know more? Send us a source.
Contents
01Overview
At a glance
- Built
- 3 Built
- Years
- Not yet verified
- Engine
- Front-mounted DOHC inline eight, centrifugal supercharger (SJ car) · 6,880 cc / 6.9 LFactory: 420 cu in · converted
- Power
- 239 kW / 324 PSFactory: 320 hp · converted
- Top speed
- Not yet verified
- Body
- Not yet verified
- Designer
- J. Herbert Newport (fenders by Alex Tremulis)
- In this archive
- Not yet verified
- Surviving
- Not yet verified
Sources and any conflicting figures are in the sections below.
Why it matters
Only three Walker-LaGrande convertible coupes were built to J. Herbert Newport's design, and just one had a factory-supercharged engine. They represent Duesenberg's late, streamlined styling as production was winding down.
How rare is it?
Six separate kinds of rarity – never combined into one number.
Each kind of rarity is rated separately and never combined.
02Production & history
Production
Every figure says what it counts.
| What is counted | Figure | Basis | Status |
|---|---|---|---|
| Total model productionWalker-LaGrande convertible coupes built (one supercharged) | 31 | Factory production | Independently researched |
Independent counts (e.g. engine and colour) are never combined into a calculated figure. Surviving examples are never presented as original production.
History
J. Herbert Newport, who followed Gordon Buehrig as Duesenberg's body designer, drew the convertible coupe, and the A.H. Walker Body Company built three under the LaGrande name, with fenders by Alex Tremulis. The supercharged car was first owned by Chicago banker John Nichols, who traded in a Murphy convertible coupe for it; after a 1940 accident its frame was replaced, so it now carries chassis 2405. It later passed through several collections and won its class at Pebble Beach in 1998.
Variants
How each version differs from the standard Model J/SJ Convertible Coupe by Walker-LaGrande.
No variants documented yet. Have a source? Contribute it.
03Specifications
Technical specifications
Engine
| Engine family | Not yet verified |
|---|---|
| Engine code | Not yet verified |
| Layout | Front-mounted DOHC inline eight, centrifugal supercharger (SJ car)2 Independently researched |
| Displacement | 6,880 cc / 6.9 LFactory: 420 cu in · converted2 Independently researched |
| Bore | Not yet verified |
| Stroke | Not yet verified |
| Compression ratio | Not yet verified |
| Fuel system | Not yet verified |
| Power | 239 kW / 324 PSFactory: 320 hp · converted2 Independently researchedSource states bhp (brake horsepower, mechanical). |
| Power at | Not yet verified |
| Torque | Not yet verified |
Transmission & drivetrain
| Gearbox | Three-speed manual2 Independently researched |
|---|---|
| Gears | Not yet verified |
| Driven wheels | Not yet verified |
Chassis, body & dimensions
| Chassis | Not yet verified |
|---|---|
| Front suspension | Not yet verified |
| Rear suspension | Not yet verified |
| Brakes | Not yet verified |
| Steering | Not yet verified |
| Body construction | Not yet verified |
| Wheelbase | 3,620 mmFactory: 142.5 in · converted2 Independently researched |
| Length | Not yet verified |
| Width | Not yet verified |
| Height | Not yet verified |
| Front track | Not yet verified |
| Rear track | Not yet verified |
| Kerb weight | Not yet verified |
| Dry weight | Not yet verified |
Performance
| Maximum speed | Not yet verified |
|---|---|
| 0–100 km/h | Not yet verified |
| Fuel tank | Not yet verified |
“Not yet verified” means no source has been checked for that value yet. Nothing is estimated to fill a gap.
04Colours & options
Factory colours & interiors
Original paint and trim, with the number of cars in each where a source gives it.
Not yet documented. Have a source? Contribute it.
Factory options & codes
Codes are shown exactly as written by the manufacturer.
Not yet documented. Have a source? Contribute it.
05Individual cars
Chassis register
Every documented car, with its colours, history and where it is now. Open a row for the full record. Known chassis are not automatically authenticated originals.
Not yet documented. Have a source? Contribute it.
Competition history
Every race result of the individual cars, in date order. Click a chassis number to open its full record in the register.
Not yet documented. Have a source? Contribute it.
Auction & sale history
Documented public sales of the individual cars. Click a chassis number to open its full record in the register.
Not yet documented. Have a source? Contribute it.
See one in person
Museums where an example of this car can be seen.
No example is documented on public display yet. Have a source? Contribute it.
06Reference
Identification guide
How to tell an original from a replica or later conversion.
Walker-LaGrande coupes have a hand-cranked 'semi-automatic' top that folds beneath a flush metal lid, deeply skirted rounded fenders over 17-inch wheels and a beltline sweep running down the front fender. The single supercharged car is chassis 2405 (originally 2563) with engine J-530.
Sources
Each number links to the exact facts it supports.
-
1
RM Sotheby's Amelia Island 2013 – 1935 Duesenberg Model SJ Convertible Coupe by Walker-LaGrande Level B
- 3 Walker-LaGrande convertible coupes built (one supercharged)
-
2
1935 Duesenberg Model SJ Convertible Coupe by Walker-LaGrande – Amelia Island 2013, lot 137 Level B RM Sotheby's · 2013
- DOHC inline eight-cylinder engine with centrifugal supercharger
- 420 cu. in.
- 320 bhp
- three-speed manual transmission
- 142.5 in. wheelbase
Keep exploring
More from Duesenberg
-
Duesenberg
Model SJ
36 Built
-
Duesenberg
Model J Tourster by Derham
Production not yet verified
-
Duesenberg
Model JN (1935)
Production not yet verified
-
No licensed photo yet
Duesenberg · 1931
Model J Convertible Sedan by Franay (J-446, Queen Maria of Yugoslavia)
1 Built
See all 23 cars by Duesenberg →
More from United States
-
Fisker · 2022
Fisker Ocean
Production not yet verified
-
Lincoln
Continental convertible 1965 (Entourage)
Production not yet verified
-
Shelby American · 1989
CSX-VNT (1989)
500 Built
-
Plymouth · 1970–1971
Hemi 'Cuda (1970–1971)
108 Built
141 other makes from United StatesAC PropulsionAcuraAllstateAMCAmerican LaFranceAmerican MotorsAmerican UnderslungApteraArmstrongArnoltAuburnBaldwin-MotionBantamBarris KustomsBendixBerger ChevroletBill ThomasBollingerBremerBuckeyeBuffumBuickCadillacCallawayCastleCheckerChevroletChristieChryslerClenetCodaColumbiaConsulierCordCunninghamCzingerDana ChevroletDean JeffriesDeSotoDetroit ElectricAll makes →