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).
Test report for the 11-EX New Phantom with a Weymann body.
| Identifier | ExFiles\Box 71\3\ scan0105 | |
| Date | 14th February 1926 | |
| CJ. COPY. HS{Lord Ernest Hives - Chair} TEST REPORT - 11-EX - NEW PHANTOMCodename for PHANTOM I. WEYMANN BODY. Consec. Day. | Agg. Mileage. | Total Running Hours. | Average Speed. | Date. 47 | 8501 | 302 25/60 | 19.0 | 14.2.26. MILEAGE. Start. | Finish. | Days. 7384 | 7479 | 95 PETROL. Start. | Addedl | Finish. | Used. 10 | 6 | 7 | 9 Oil Added. | Oil M.P.G. | Petrol M.P.G. | Running Hours. ✓ | ✓ | 10.6 | 5 Route, condition, etc; involuntary stops; adjustments; work done; remarks on running, etc. London, Gerrards Cross, Lillie Hall. Roads fair. Drivers W. Richards and BJ. (Sgd.) CWB. | ||