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 comparison table for a Watford Magneto, detailing the cost at Springfield versus the U.S.A. equivalent.
| Identifier | ExFiles\Box 49\5\ Scan063 | |
| Date | 1st February 1921 | |
| Contd. -3- HS {Lord Ernest Hives - Chair} 3/LGS.2.21. Cost laid down at Springfield. Cost of U.S.A. equivalent. Watford Magneto. 92.74 35 dollars. Hs. {Lord Ernest Hives - Chair} R.R. 2358 (100 T) (S) H. {Arthur M. Hanbury - Head Complaints} 198. 10-12-30) G. {Mr Griffiths - Chief Accountant / Mr Gnapp} 2948 | ||