Low pressure sodium lamps (part 5)

Philips 55w SOX lamp

Philips 90w SOX lamp

Philips 135w SOX lamp

Philips 180w SOX Lamp

Philips SOX-E lamps have a Black Cap

Older Philips 18w SOX-E Lamp

Newer Philips 18w SOX-E Lamp

Philips 26w SOX-E lamp

Philips 36w SOX-E lamp

Older Philips 66w SOX-E lamp
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