From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
List of experimental parts fitted to Chassis 6.EX.
| Identifier | ExFiles\Box 78\1\ scan0072 | |
| Date | 22th June 1920 | |
| X 3563 Extract from RHC{R. H. Coverley - Production Engineer}1/LG22.6.20. RE CHASSIS 6.EX. Will you kindly note that the above car has been fitted with the following experimental parts:- X.3760. Switchbox - LeC.1161. X.3563. Ignition Tube Brackets to suit Thermostat Control N.3794. X.3507a. Luggage Grid. N. sch. 310. X.3747. Spare hweel carrier. N. sch. 225. X.4072. Exhaust Nozzle. n. scheme. 366. X.3419a. Rear Silencer. - N. sch. 345. | ||