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).
One dozen Champion sparking plugs of the porcelain detachable type for the 1.EX Car.
| Identifier | ExFiles\Box 35\3\ scan 120 | |
| Date | 23th October 1920 | |
| X4196 S 13 (1m-100 T) S.H. 89. 23-7-20; G 3785 To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} Hs{Lord Ernest Hives - Chair}3/LG23.10.20. X. 3763b. X. 4196. SPARKING PLUGS. Amongst the spares on 1.EX Car there are 1 dozen Champion Sparking Plugs - these are procelain detachable type. Hs.{Lord Ernest Hives - Chair} | ||