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).
List of models with associated numbers, weights, and dates.
| Identifier | ExFiles\Box 3\3\ 03-page110 | |
| Date | 21th December 1906 | |
| H.{Arthur M. Hanbury - Head Complaints} Royce's 2200 Signature No. 2. No. 3. No. 4 light No. 4 heavy No. 6 short 60525. 17.3.2 1990 lbs No. 6 long 60539. 17.2.2 1762 lbs No 6 (1907) short 60546. long 60559 17.0.15 1628 lbs Frames 4053 / 11.2.14 18.3 Springs 4054 / 28.2.14 21.12.06 Springs 4056A / 19.3.14 18.3.12 2116 lbs Springs 4056A / 19.3.14 21.3 60546 / 15.3.15 (Carden) 22.3 60559 / 15.3.15 (Rear) | ||