Low pressure sodium lamps (part 2)

GEC 90w SUPERSOX lamp

GEC and Thorn 35w SOX lamps

1960's GEC 60w SOI-H lamp

GEC 60w SLI-H lamp

Osram GEC 200w SLI-H Lamp

1970's GEC 90w SUPERSOX lamp & Modern Osram 90w SOX Lamp

Later 1990's Osram 18w SOX lamp

Modern Osram 18w SOX lamp

Late 1980's Osram 35w SUPERSOX lamp with White Cap & Nickel plate rim

Early 1990's Osram 35w SOX lamp with White Cap
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