Kewpie Butterfly Dish

I found this little Kewpie butterfly dish at a thrift store yesterday and I can't find any info about it. The top of his mandolin is broken off, and he was terribly dirty, but a bath helped his looks tremendously. If you recognize the mark on the bottom, please let me know. It's about 6" wide x 4.5" deep x 4" tall and has gilding around the edge of the butterfly. I think it's made of porcelain and appears to be hand painted.