Photograph of a pocket watch with handwritten annotations.
| Identifier | ExFiles\Box 165\3\ img065 | |
| Date | 19th October 1928 guessed | |
| Booklet in Pamphlet box Hslhe Y975 s6035. n° 705 Bis 200+ | ||
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).