From left to right top shelf:
Left--Very old Chinese plate (many cracks, but repaired and back repainted) that my in-laws gave to us over 25 years ago.
Middle--Gift to my father-in-law while he was in the automobile business.
Right--Another old Chinese plate (cracks and all) given to us with the one on the left.
All I know is "Chinese" plates that hung for years in my in-laws' home.
If I had the time or desire, I would try to track down if they are "real" or valuable. It does not matter to us, since they were part of my hub's inheritance.
We just enjoy them all.
(Photo from my new camera!)