I ordered 2 C100S54 Westinghouse Ceramalux lamps from the 1980s on eBay.  I was wondering if these were as good as their Mercury Vapor counterparts. (I.E. Do they last forever and a year before cycling?) 

I love how they look like the 100w clear Westy mercs.  But the ceramic arc tube looks huge compared to modern day chinese crap. 

I ordered 2 C100S54 Westinghouse Ceramalux lamps from the 1980s on eBay.  I was wondering if these were as good as their Mercury Vapor counterparts. (I.E. Do they last forever and a year before cycling?) 

I love how they look like the 100w clear Westy mercs.  But the ceramic arc tube looks huge compared to modern day chinese crap. 

They're good lamps, but not nothing like a Lifeguard.

Oh I love my Lifeguard 175w Mercury lamps.  I’ll probably be dead before these burn out.