Sylvania F8WT5830.

Came C/W some Sylvania LS200 undershelf link lights that I installed 5 years ago.

I decided to remove the lamps and diffusers to clean all the gunk off them. Running in an MLP just for the photo.
The grease seems to have reacted to the etch because it just wiped almost off when I cleaned the lamp.

These are in use pretty much any time somebody is in the house until the last person goes to bed
Doesn’t look too bad although the blue near the electrodes is slightly more noticeable than on camera.
I got several in 21w, 14w and 8w flavours depending on the size of the cabinet it was going under.
The ballast gives a nice pre-heat before striking, none of this instant on that you usually see in these link lights.