This teacup is a modern one. I believe it came from TJMaxx. It is not marked, is thick and heavy, and though it is fine for tea it is of course not quite the same as drinking out of real fine bone china! The pretty wreath of Victorian roses and gold rims make it a pretty addition to a collection.
Interestingly, the same wreath of roses is used on this set of four bowls, which came from my grandmother. I am guessing these are from the 1940's. The raised beaded trim still has some gold color on it.