The mechanism works, it's a little dirty and the catch cup glass has a brown piece at the top lip. Has the top lid, has all original screws. The bottom of main glass has tap to keep from rubber see pictures and the catch glass cup seems a bit small to really rest in the but it also seems very worn so it may just be so worn that it doesn't fit tight. I'm not an expert please see pictures it may not be the catch cup it came with but it is a catch cup and vintage for sure.
Found just as it is still mounted to a wall in a very old office building. Art Deco Antique Arcade Crystal Coffee Grinder with ORIGINAL catch cup- complete.