Pumped plenty of coins into these machines in the seventies.   
You will be a EM technical expert Daniel if you can tackle these machines.
Good site for bingos here http://bingo.cdyn.com/
Looks like the coin door is the same as my Bazaar, What are you doing to the machine ?
Kev

Well Kev
         Hopefully i can get the old girl running 100% then ill most likely strip it down for a full rebuild the cabinet is splitting from where it was dropped so will need some work to repair as its holding alot of weight and id hate it to fall onto any of my other machines....

   Biggest problem is i might have to part with a machine if i keep this one