THE CLOCK  HAS  NO BACK DOOR COVER JUST NEEDS A  PIECE OF  HARDBOARD WITH A  HOLE  IN IT TO  HANG ON A HOOK OR NAIL , IT HAS  THE WEIGHT  FOR IT  AND  CHAIN  THERE IS A PENDULUM BUT IT  HAS BEEN  MADE FOR THE CLOCK I THINK IT  SHOULD  HAVE A PLASTIC  ONE  , SO  IT MAY NEED A NEW  ONE , SIZE IS  9 1/2" X 7" NICE  CLOCK JUST A  BIT  OF  WORK  TO  GET IT RUNNING  OK ,  THE BELLOWS ARE  OK  NO  HOLES 

ANY Q'S  JUST ASK