Low pressure sodium lamps (part 3)

Early 1990's Osram 35w SOX lamp

Later 1990's Osram 35w SOX lamp

Early 1990's Osram 35w SOX-Plus lamp with Orange Cap

Later 1990's Osram 35w SOX-Plus lamp with Red Cap

Modern Osram 35w SOX lamp

Modern Osram 35w SOX-Plus lamp

Early 1990's Osram 55w SOX lamp

Later 1990's Osram 90w SOX lamp

Later 1990's Osram 135w SOX lamp

Osram 180w SOX lamp
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