Paint swatch of a dark grey/black color.
| Identifier | WestWitteringFiles\C\January1919\ Scan4 | |
| Date | 30th April 1913 | |
| H'H' 332R (S.D. I.) (E'D' 408' 30-4-13) bur Streels | ||
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).