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).
The approximate labour cost for changing Phantom III axle gears.
| Identifier | ExFiles\Box 96\1\ scan0237 | |
| Date | 23th December 1937 | |
| Guy Labour involved in changing Ph III axle gears costs approximately £8.10.0. Hdy{William Hardy}/SB.{Mr Bull/Mr Bannister} 23.12.37. £1 further mods | ||