I wonder if anyone can shed some light on this bowl. About 8" diameter, 2" high. Wondered particularly about the glass inside the bowl, looks almost like mother-of-pearl which, of course it is not. The outside looks Japanese. I got this in a Kansas City Thrift Shop in the late 70's, early 80's. Inscription on bottom of the bowl, fired in, is "Many Happy More Birthdays. 9/23, 23". Any help appreciated. John