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).
Comparative parts list table for components across various Bentley and Rolls-Royce car models.
| Identifier | ExFiles\Box 149\3\ scan0067 | |
| Date | 16th May 1939 guessed | |
| BENTLEY. | 25/30. | P.III & WRAITH. | MOD. H.P. B.V. Alum Washer (Unions). | 2. | | 2. | 2. | X | Supplied by R.R. Fibre washer (Unions). | X | | X | X | 2. Fixing nuts 2.B.A. | 1807. 12 | 1807 12 | 1807 12 | X Fixing spring washers. | 12 | 12 | 12 | 12 Fixing Screws. | X | X | X | X Bakelite contact platform R.R. type. | 1808 2 | 1808 2 | 1677 2 | X | Variation in height on 25/30 & H.P. S.U. Standard. | X | X | X | 2 2.B.A. Fixing screws. | 4 | 4 | 4 | 4 Toggle mechanism. | 1457 2 | 2 | 2 | 2 | Common to all. Double contact pin. | 2 | 2 | 2 | 2 Contact blade. | 1458 2 | 1458 2 | 1458 2 | 1458 2 | Common to all. Contact support. | 1809 2 | 1809 2 | 1809 2 | - X | Common to all except B.V. not required. Contact fixing screw. | 2 | 2 | 2 | 2 Contact lock washer. | X | X | X | 2 Terminal screw. | 1810 2 | 1810 2 | 1468 2 | 2 Fixing nut. | 878 2 | 878 2 | 878 2 | 2 Lead washer. | X | X | X | 2 Connical nut. | 2 | 2 | 2 | 2 Spring washer. | 1086 2 | 1086 - | 1086 | X Contact cover. R.R. S.U. | DB.{Donald Bastow - Suspensions}442 X | DB.{Donald Bastow - Suspensions}442 | 1466 2 | 1466 2 Fixing nut. | 2 | X | 2 | 2 Spring washer. | K9006A 2 | 2 | 2 | 2 Terminal. | DB.{Donald Bastow - Suspensions}440 X | X | 2 | 2 Armature spring. | 2 | 2 | 1785 2 | 1785 2 | ||