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My BT-25 collection!!!
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Here you see are my whole BT-25 collection!
The top row is all HPS lamps.
The middle row are used mercury vapor but actually works (some may need start up aid)
The bottom row are NOS Mercury vapor lamps!
Can you guess brand and the circa age of each? ;-)
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I have a clearbander, a cleartopper, and a clear one, that's it.
I'm just missing an HPS one.
That pic is sweet!
you need a 175W MV
By the way the far upper right lamp is a coated HPS.....
Top: Blown westy, c. 1980, two Philips mid 80s, westy full framer 1983, and diffuse westy 1983.
Center: all Westy mercs, mid 70s to early 80s
Bottom: Westy cleartop pre mid 70s, Westy fully coated mid 70s to early 80s, late 60s-early 70s cleartop Sylvania, mid 70s Sylvania cleartops (three), and very late 70s Sylvania clearbander.
All the Best
Colin