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).
Diagram showing the clip positions for special 1050 lbs front springs.
| Identifier | ExFiles\Box 16\7\ Scan040 | |
| Date | 31th December 1927 guessed | |
| "A" 14.800 "E" 15.820 REAR EYE. B 9.500 (MAX) F 8.100 (MAX) - CLIP POSITIONS FOR SPECIAL 1050 LBS FRONT SPRINGS - - F.78164 (SIMILAR TO F71979) - | ||