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).
Fitting and testing paraffin waxed paper ignition coils on experimental chassis.
| Identifier | ExFiles\Box 69\1\ scan0135 | |
| Date | 3rd September 1928 | |
| To RHC.{R. H. Coverley - Production Engineer} from EFC. c. Hs{Lord Ernest Hives - Chair}/AJL. Y8710 EFC1/T3.9.28. PARAFFIN WAXED PAPER IGNITION COILS. We hand you herewith two of the above type coils designated PWP4/5 tested O.K. We should like you to have these fitted as soon as possible to expl. chassis 9-EX and 10-EX as we are anxious to get as much running as possible with these coils in the hope of standardisation. The coils removed should be returned to us. EFC. | ||