Stamped by the Print Room in Derby.
| Identifier | ExFiles\Box 32\1\ Scan086 | |
| Date | 17th May 1923 | |
| ROLLS-ROYCE, LIMITED PRINT ROOM. 17 MAY. 23 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).