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).
Weight specification sheet for car 49-GB, detailing front, rear, and total weights.
| Identifier | ExFiles\Box 3\2\ 02-page080 | |
| Date | 15th June 1920 | |
| X 200 15.6.20. X.200. 49-GB. Car. X.2631. WEIGHT. Front......... 19 cwt. 0 qrs. Rear.......... 1 ton 0 * 2 * Total......... 1 * 19 * 2 * | ||