List of differences between the 10-EX Blue Sports Phantom and the standard chassis.
| Identifier | ExFiles\Box 70\1\ scan0147 | |
| Date | 7th December 1927 | |
| 18774 To Hs. {Lord Ernest Hives - Chair} from BJ. Blue Sports Phantom. BJ3/E12/7/27 10-EX. Referring to R4/M11/7/27, would you please let me have a list of items in which 10-EX differs from our standard chassis? BJ. | ||
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).