Eiraku Japan Red Gold Dragon Set Antique Kutani

I believe this set is Vintage Antique Kutani Eiraku Eggshell Porcelain Japanese Tea Set. It is not signed or marked, but I know for sure that is is from 1920s or earlier - it was my mother-in-law's play set when she was a little girl. Tea pot 6” with lidx 5" x 3.5", sugar bowl 4" with lid X 4.25” x 3", creamer 3.5" x 3" x 2.5", two saucers 4.25". The color is red/orange features Gold Dragon & gold symbol. It is in a pretty good condition, no chips or cracks, some wear shown because it is old.