I would avoid this one...whoever worked on it last certainly taken liberties with fixing the movement problems it has...
Fill the hole in the jumper with glue or epoxy, drill a small hole in it, and affix to the movement by twisting a piece of wire around the screw. Note that the missing parts are no longer available, and you would have to search for them, which may take some time.
Brings back fond memories of "paper clip gate"...but this one is, shall we say, more creative.
Cheers, Al