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).
Letter from The Edison Swan Electric Co. Ltd. regarding a sample 25 volt lamp, pricing, and lampholder.
| Identifier | ExFiles\Box 38\3\ Scan289 | |
| Date | 24th January 1921 | |
| X.3362 EDISWAN. Great Market Place, Nottingham. Our Ref. W/B24. 24.1.21. Messrs. Rolls-Royce Ltd., Nightingale Road, D E R B Y. X.3362 X.1114 Dear Sirs, We thank you for your letter of the 20th inst., and have pleasure in informing you that we have sent you under separate cover sample 25 volt Half Watt Lamp. We are sorry we could not send a 24 volt as these are not a Standard voltage, and would take a considerable time to manufacture. On the other hand, if 25 volt Lamps would answer your requirements we could deliver from stock. We have pleasure in enclosing our price list of these Lamps, and you will notice the different wattages that are manufactured. This list is subject to your usual discount of 32½% and 2½% Monthly. We are also sending a Lampholder, but if you find they are required Miniature type we could supply immediately on receipt of your order. We have send you a Standard Train Lighting type, Holder. Yours faithfully, THE EDISON SWAN ELECTRIC CO. LTD. | ||