I grew up in the 50's when it was common for little girls to collect demitasse cups and saucers. I remember most every dime store sold these. They were mostly from Japan because this was the post World War II Era. These came from my Mom and I kept them in a an old cedar chest.
Forget Me Nots were a popular pattern. Sometimes a few got broken along the journey of life and some show signs of very old glue!