The reverse side of a document featuring a purple ink date stamp from the Derby office.
| Identifier | ExFiles\Box 31\2\ Scan073 | |
| Date | 10th December 1927 | |
| ROLLS-.... FEB 10 DEC 1927 DERBY | ||
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).