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).
Specification for the radiator cap to be made from nickel silver and suitable for carrying the mascot.
| Identifier | ExFiles\Box 77\4\ scan0174 | |
| Date | 21th October 1921 | |
| X.4219 Extract from E1/G21.10.21. X.4240. RADIATOR CAP. X.4240 The radiator should have the 40/50 H.P. type of radiator cap in nickel silver. I believe the same size cap will do. This is with a view to maintaining the R-R appearance, and also to make the cap suitable for carrying the mascot. E.{Mr Elliott - Chief Engineer} | ||