Finding a reputable appraiser is one of the better ways to determine the value of your bone china. This is a page about finding the value of English bone china.
I have six of these plates as given to me from my mother probably about 20 years ago. I don't know much about them other than they say Bloomingdale Bros and Limoges France on the back.
I have about 6 sets of Bombay China Company blue/white teacup/plate sets with silver looking trim. There are 6 large plates and 6 medium sized plates with the Bombay name stamped on the bottom of all of them. The pattern is tile or fanned. I'm just curious as to what the value of these things are?
To identify Saxon China you can find information and pictures at the Sebring Historical Society. There are also pieces on Ebay.