Thanks a photo of the schematic would be really great, as in my first post I have a German schematic but can't read wire colors, or relays or counters etc.
Mine had the bell missing when I got it, but I am going to try a steel post cap (Bunnings or steel suppliers) as per the original setup. This link shows the number match counter with bell attached, the whole catalogue is pretty handy too.

http://www.planetarypinball.com/reference/partsmanuals/BLY_Parts_1971/index.html#/73/zoomed#/73/zoomed

My machine is a German model with an English backglass which has top and bottom peeling. The playfield is in German, ie POST is called TOR etc. Condition overall maybe a 6 or 7/10.

The cabinet paint is not too bad for its age , but at the top sides of the back have been repaired and not painted (small area).

Reading above makes it sound pretty bad, but its not that bad. Great to hear what you have done, its a good feeling to kick a few goals on these machines, but must be great to win the game.

Cheers
Andy