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).
Hand-drawn graph showing purely fictitious monthly expenditure on various vehicle units.
| Identifier | ExFiles\Box 126\2\ scan0171 | |
| Date | 26th July 1939 guessed | |
| £ 4000 3500 3000 2500 2000 1500 1000 500 MONTHS 1 2 3 4 5 6 7 8 9 10 11 12 ENGINE REAR AXLE CLUTCH FRAME & SUSPENSION BRAKES GEARBOX MONTHLY EXPENDITURE ON UNITS. (FIGURES PURELY FICTITIOUS) | ||