Research indicates this Bavarian maker's mark stamped on the back dates 1908-1939.  Thomas was known for detailed hand painted floral and fruit creations.  This plate also has initials "B Y". The delicate blue floral design is breath-taking. There is a bit of loss to the thin gold trim on the edge. Consistent with age. No cracks, crazing or chips.  Measures 6" diam. Look for other Bavarian items and plates in my booth.