Music Maker

Today's tiny challenge is something mechanical.
This is the workings of a music box. It is marked on the back with my grandmother's initials and 1951 (or 1956). I don't think I had ever noticed that before.
I thought it was still working but seems to have seized up. Hopefully I can get it fixed somewhere.
Thanks for hosting H0tamer.

My sister, Sally (aka blipper MsPeahen), is visiting. We had dinner at Graham and Bec's so she could catch up with them.