# What is this diode?

I found this set of diodes in a (possibly labelled) anti-static bag, but have since lots the bag. The marking on the diode appear to be

]::  244
R    2 0


The :: is more of subdivided rectangle, with less space between parts:

Is the ]:: a logo of some semiconductor manufacturer?

What is this part? I think it might be a 200V zener, but I don't trust my memory.