Author Topic: Which lamp is older?  (Read 787 times)
RadiantMV
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Which lamp is older? « on: May 30, 2022, 07:12:40 PM » Author: RadiantMV
2 cleartop 400 watt westy lifeguards, one of which I will get in a trade. My question is, if anyone can date by etch, which one is older and what is the exact year?

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HPS_250
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Long live the HPS and SOX!


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Re: Which lamp is older? « Reply #1 on: May 30, 2022, 07:16:57 PM » Author: HPS_250
The H33-1-GL/DX is definitely older since it was made before the 400w lamps were called H33GL-400/DX as they still are. If I remember correctly it’s likely from the 60s to around 1972/73. Unfortunately I don’t know the exact dates from the etches though, I’m sure some other members do.
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I’ve always been interested in all kinds of lighting, mainly incandescent and HID, and especially all kinds of sodium lamps (HPS/LPS). I’ll tolerate LED but I’m not a fan of it.
I’m not proud to say that my city has Devolved to LED.

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