Electronic Quartz Revolving Pendulum ANNIVERSARY Clock

Electronic quartz clock revolving pendulum ANNIVERSARY CLOCK purchased sometime in 1985 for My grandmother and she was kind of ungrateful didn't like it and said it didn't work well she is right I can't get to work Does have some kind of marking on the platform excellent condition box is a little damaged and has some wear No instructions and no BATTERY COVER DONT MAKE THESES LIKE THIS ANY MORE