"In my experience most of the oldest model late 60s Centuries had white cords. Most 70s lamps have brown cords then later versions black. This is by no means a hard and fast rule as there are exceptions. 32 oz lamps are a different story (for…"
"If the caps on the bottles are American I’m pretty sure they are Elek-Trick series lamps. From what I understand, the earlier versions were fluorescent blacklight reactive and then later on they went to regular paint which was cheaper to…"