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).
Estimated cost for new tools and a production timeline for the R2 series chassis.
| Identifier | ExFiles\Box 105\4\ scan0193 | |
| Date | 22th December 1936 guessed | |
| 30 H.P. STANDARDISATION PART (Reversed Stamp) Estimated cost of New Tools ........ £37. 0. 0. Could be brought on to production at the 1st. chassis in R2. series (without scrap). | ||