Here you see a Osram GEC Lamp Catalogue, this catalogue is dated September 1975, each section covers as follows
Section 1 = General Lighting Service Lamps including Special Purpose Lamps, Tungsten Halogen, "Shop Spot" and Traffic Signal Lamps,
Section 2 = Discharge Lamps including Fluorescent Tubes, Starter Switches, Mercury Lamps, Sodium Lamps, Solarcolour Lamps, and Electronic Starters.
Section 3 = Vehicle Lamps, including Torch Bulbs, Radio Panel Lamps, Telephone Switchboard and Telewriter Lamps, and Vehicle Lamps Number Index.
Section 4 = Photographic and Projector Lamps & Lamps for Aircraft and Airfields including Tungsten Halogen Types.
See HERE for Scanned Catalogue (Curtesy of James Hooker)