Chassis Numbers
View the Chassis Numbers for the Rolls-Royce 20/25: O series GXO11 on
Notes on O series 20/25
Commencing at chassis number GXO11. The series runs from GXO11 - GXO111. The first 20/25 to come off test appears to be GXO15, 28/08/29.
Apart from the engine bore size being increased to 3 1/4" the chassis and running gear was similar if not the same as the earlier 20hp cars.
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