White 40W (Telam)

I saved this tube from an old lamp that was in the power plant. While repairing it, the workers threw away the old lamps, and I saw this one and brought it home along with a GE 18W Chinese tube. This tube works, but one cathode is faulty. Lamp has a color temperature of 4000 K, the phosphor coating is smooth and the date of production is October 1968.