Blueprint showing three design variations for a component for the Phantom III model.
| Identifier | ExFiles\Box 113\5\ scan0020 | |
| Date | 30th April 1937 guessed | |
| PHANTOM III (ORIGINAL) 5 PHANTOM III - TUBULAR 6 PHANTOM III - TUBULAR WITH HANDLE OUTSIDE BUMPERS. 7 | ||
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).