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).
Cost breakdown for a Phantom III frame, number 327.
| Identifier | ExFiles\Box 94\4\ scan0101 | |
| Date | 14th May 1934 guessed | |
| P III Frame 327. 44. 3. 7 Materials including jacks 11. 11. 3 Labour @ £4.4.4. 23. 2. 6 Charges £ 78. 17. 4 Frame as received from Thompson £ 19. 9. 9 | ||