Antique glass/brass doorknob. Skillman passage sets

4 vintage 12 point glass knob and polished brass passage sets in original boxes. All hardware is there. 3 sets have been partially assembled with spindle. 1 appears to have issues with the screws (see pic). They have been left as is. Have not attempted to clean them as wanted to leave as is. They are really beautiful and would be great for restoration.