10x De-Luxe Achromat loupe/comparator back the viewfinder shade switch is

the viewfinder shade switch is immobile

with very minor surface marks on the filter which won't affect imaging (but they're there

and 100-200mm f3

but this is a pretty decent manual-focus zoom lens for the Nikon F mount

very minor front element coating marks

10x De-Luxe Achromat loupe/comparator back the viewfinder shade switch isWell, I don't know who made this loupe, but it's pretty nice: it's a clean 10x achromat with excellent sharpness, and it includes two comparator discs if you're planning to use it as a pocket comparator. It's an excellent loupe, with a transparent skirt that makes it suitable for reflective or transmissive materials. Includes case.