Description: nice mirror removed from High School laser lab. Used in laser R&D, this mirror must stand laser power, so I guess it is prepared somehow for that task. It seems a borofloat mirror with a strong GOLD coating. It should be Edmund, Thorlab or Newport brand.
Condition: Mirror is GREAT shape. It has a couple of microscratches, but overall very nice. I would say at least 95% performance (see last two pictures under strong light and angle to see imperfections).