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).
Letter to Light Production Co. Ltd. confirming tin-plating as a standard feature on all supplied rings.
| Identifier | ExFiles\Box 148\1\ scan0106 | |
| Date | 17th April 1939 | |
| -2- Light Production Co.Ltd. 17th. April, 1939. From Henceforth therefore, tin-plating to be a standard feature on all rings supplied. Yours faithfully, FOR ROLLS-ROYCE LTD. | ||