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The “Rolls-Royce Jonckheere Aerodynamic Coupe” is the one-off Phantom I with striking circular doors, often called the Round Door Rolls. The “may rise again” headline referred to a possible modern interpretation reported around 2012—not to a documented new car or a current Rolls-Royce revival. Recent event records refer to the historic original.
What is the Round Door Rolls?
It is a streamlined, two-door Rolls-Royce Phantom I with bespoke Jonckheere coachwork. Its circular doors gave rise to the familiar “Round Door Rolls” name. Rolls-Royce Motor Cars included the “round-door” Jonckheere Phantom I in a 2026 heritage article about the marque’s coupes, identifying the body as dating to 1934. The chassis and body dates are distinct; the 1934 date describes the coachwork, not necessarily the chassis. Rolls-Royce Motor Cars’ coupe heritage article frames the car as part of a broader tradition of bespoke two-door coachwork.
The car is notable for its highly individual streamlined form, but the available sources do not establish a complete chassis and ownership chronology or a detailed restoration specification. Precise claims about its first owner, conversion history, engine output, or earlier concours record need car-specific documentation.
Was the Jonckheere Rolls-Royce ever rebuilt as a new car?
The often-repeated “may rise again” wording comes from a New Atlas headline published around 2012. That article discussed a possible modern interpretation of the existing car. It is evidence that the idea was floated, not that a reproduction was completed or commissioned. The available records do not establish a second Jonckheere Aerodynamic Coupe, a Rolls-Royce Motor Cars commission, or an active revival program. New Atlas’s 2012 article is historical context, not confirmation of a present project.
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| Question | Historic Round Door Rolls | Proposed modern interpretation |
|---|---|---|
| What is documented? | The Phantom I with Jonckheere coachwork, identified by Rolls-Royce as a 1934-bodied coupe. | A possible interpretation discussed in the 2012 New Atlas article; a completed car is not established. |
| Is a physical car documented? | Yes. Recent event coverage identifies the Petersen Automotive Museum’s historic car. | No completed modern car is documented in the cited sources. |
| Who authorized or built it? | The available sources identify the historic car and its coachwork, but do not provide a complete build chronology. | Rolls-Royce Motor Cars authorization or commissioning is not established. |
| Where can it be seen? | Recent concours records place the original at events; its current museum display status is not established. | No location for a completed new car is established. |
What do recent concours appearances prove?
La Jolla Concours d’Elegance lists the Petersen Automotive Museum’s Phantom I Aerodynamic Coupe by Jonckheere among its 2025 class winners. A 2026 Pebble Beach event report also names the Petersen car among the entrants. Those dated records show the original’s continuing concours presence; they do not indicate a second car or confirm that the original is continuously on display at the museum.
- La Jolla Concours d’Elegance’s 2025 winners archive identifies the Petersen car among the class winners.
- HDmotori’s 2026 Pebble Beach report identifies the Petersen car among the entrants.
Can you see the original at the Petersen Automotive Museum?
The event records associate the original with the Petersen Automotive Museum, but they do not confirm its current gallery placement, public display dates, or visitor arrangements. Check directly with the museum before planning a visit around this car.
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Can you buy a model of the Jonckheere coupe?
F1 Scale Models’ stock list includes a 1:43-scale Phantom I Jonckheere Aerodynamic Coupe model. That listing supports looking for the model by its scale and name, but it does not confirm present inventory, the maker, or availability through Amazon. Check the product listing for the scale and stock status before buying.
F1 Scale Models’ road-car stock list is the cited specialist listing.
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