Photograph showing the front of an engine with a cooling fan, belt, and pulley system.
| Identifier | ExFiles\Box 133\4\ scan0338 | |
| Date | 13th April 1940 guessed | |
| BENTLEY MOTORS (1931) LTD. CONDUIT ST LONDON W. ISSUES NO. MAKERS NO. 14523 RH {R. Hollingworth} 7706 | ||
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).