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).
List of recommended lamp bulbs for the Phantom II chassis.
| Identifier | ExFiles\Box 166\4\ img092 | |
| Date | 20th February 1931 | |
| 15.1.31. 20.2.31 LIST OF LAMP BULBS RECOMMENDED FOR STANDARD ON PHANTOM II CHASSIS. 1. Headlamp bulbs. 12/14 v.{VIENNA} 48 w. gasfilled, centre contact S.B.C. cap. (Osram No. S.7014). 2. Central lamp bulb. 12/14 v.{VIENNA} 48 w. gasfilled, centre contact S.B.C. cap. (Osram No. S.7014). 3. Side lamp bulbs. 12/14 v.{VIENNA} 4 w. vacuum, centre contact, S.B.C. cap. (Osram No. S.7126). 3. Tail lamp bulb. As side lamp bulb. 4. Instrument lamp bulb. 16/18 v.{VIENNA} 3 w. (Osram No. S.7954) with S.B.C. centre contact cap as arranged with G.E.Co. by R.R. 4. Thermometer lamp bulb. As instrument lamp bulb. 5. Inspection lamp bulb. 12/14 v.{VIENNA} 4 w. vacuum, double contact, S.B.C. cap. [strikethrough]BAS.IC.B.[/strikethrough] (Osram No. S.7172) 6. Body lamp bulb. 12/14 v.{VIENNA} 9 w. half opal, vacuum, double contact S.B.C. cap. or 7. 12/14 v.{VIENNA} 6 w. festoon, vacuum (Osram No. S.7282) EFC. | ||