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).
Exploded view diagram and spare parts price list for the Molla Plug.
| Identifier | ExFiles\Box 33\3\ Scan119 | |
| Date | 9th March 1921 guessed | |
| Do not throw away any old parts of your Molla Plug they are always useful to make up another plug with, as they are all the same size and standard in make. IMAGE CONTENT: Left side shows an exploded view of a Molla Plug with numbered parts from 1 to 8. Part 3 has the word 'MOLLA' on it. Right side shows a price list table: N° | Description | Price ---|---|--- 1 | Brass Base . . . | 3/- 2 | Electrode . . . | 2/3 3 | Porcelaine. . . | -/8d 4 | Washer . . . | -/1d 5 | Brass nut . . . | -/1d 6 | Connection nut. . | -/4d 7 | Spring Washer, each. | -/½d 8 | Brass Washer, each. | -/½d | Total . | 6. 6. IMPORTANT NOTE : the price of the various spare parts to make one "Molla" plug make the same total cost as a Molla plug together. | ||