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).
Confirming the cost of two special Watford aero magnetos.
| Identifier | ExFiles\Box 43\4\ Scan124 | |
| Date | 6th June 1928 | |
| X4021 6 6.28. Roy{Sir Henry Royce}/Dn. informs us that the 2 special Watford aero magnetos recently ordered by Rg.{Mr Rowledge} at our request are to cost £80. each. EFC. | ||