These princess plates are pretty stunning.  I like the balance between the decorated band and the amount of white space. The flowers are raised a bit and perhaps are enameled (not sure).  The yellow is very pretty offset againt the light blue.  

There is a Minton's stamp o the back referencing a trademark from 1928. That said, I don't know when thse were made. They are in overall good vintage condition. Three plates are in very good condition. One has a flea bite chip in the foot. Another has a crack in the glaze in the front. Two have glaze craquele in the front.  One has a chip in the back of the rim. Please see the photos and examine them carefully.

These measure 8 3/4" across. I am calling them luncheon but don't know this maker/pattern well enough to be sure so please investigate if you are trying to complete a set.

Feel free to pass along questions.  Thanks.