1907 Roi-des-Belges body on a Standard Thirty chassis
Roi-des-Belges ("King of the Belgians") or tulip phaeton was a car body style used on luxury motor vehicles in the early 1900s. It was a double phaeton with exaggerated bulges "suggestive of a tulip".[1][2] The rear bulges accommodated two corner seats like tub armchairs which were accessed from the rear by a central door with a small fold-down seat.[a]
^Gartman, David (1994). "Early development of the automotive form". Auto opium:a social history of American automobile design. Routledge. p. 27. ISBN978-0-415-10571-2. Retrieved 2012-03-17. Initially commissioned by King Leopold of Belgium, this elegant body had wide, bulging sides and a rear of double-reversed curves reminiscent of a tulip. This spacious body was popular on the expensive makes on both sides of the Atlantic, while the simple side-entrance tonneau or double phaeton was placed on less costly cars.
^Bird, Anthony (1967). "Bodywork and Accessories". Early Motor Cars. London UK: George Allen & Unwin. p. 139. A new name, the Roi des Belges, was introduced into coachbuilding circles and was used to distinguish an opulently curving, tulip-like form which, if executed really well on a big enough scale, could have a superb effect.
