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).
Transfer of four F.7153 40/50 type spark coils in a Goshawk case for Mr. Archer's department.
| Identifier | ExFiles\Box 45\4\ Scan054 | |
| Date | 30th October 1922 guessed | |
| X.4079.a X.4079 X.3445. Mr. Clark. Please accept four spark coils F.7153 40/50 type fitted in Goshawk case for use in Mr. Archer's Dept. (sgd) W. Gamble. Coils marked on bottom of case. | ||