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).
Specifications of lamp bulbs for the 15-EX car and requesting an order for the Experimental Department.
| Identifier | ExFiles\Box 61a\1\ scan0313 | |
| Date | 13th February 1928 | |
| X4477 To Roy{Sir Henry Royce}/F.{Mr Friese} from EFC. EFC6/T13.2.28. RE LAMP BULBS. We have ascertained that the lamp bulbs which were fitted to 15-EX car were :- 12-14V. 60 watt. OSRAM. Gasfilled. .74. double filament (2 horizontal) These bulbs, though of G.E.C. make, were supplied by Messrs. Lucas in some of their headlamps which we recently obtained for experimental cars. We have none of these bulbs in stock, but should be pleased if you would obtain for the Expl. Dept. 1 doz. of these for use on experimental cars, to O/N.735. EFC. | ||