You appear to have a nice nested chime bell set. The bells should have been tuned to make a nice melodious sound when the unit was swung. From your photo, it would have been hung from a bracket with a circle for the top knob to sit in, probably with a notch cut out so that you could slide the set in and out for cleaning. This would usually be used in an orthodox church to call priests/nuns to meetings/worship and I believe I saw a similar set in a government building to call members in for a vote or what not!
Hello Garry, thanks for your message. I found out that this was a gift to a family member from a Catholic Abbey in Lisle, IL probably 50 years ago. It works a bit differently than you surmised above. It is horizontally mounted in a fixed / static (not free swinging) mode and attached to the wall on the decorative mount behind the bell. When the rope is pulled, the bells do not move. The 4 clappers rotate 90 degrees up and each strike the 4 bells in unison producing a nice sound of 4 bells ringing simultaneously. They all work too! I’ve asked the current family member if there is a manufacturing / original stamp or marking on it and I will be sure to report back if that is the case. Thanks again. Kevin