It doesn't have any distinguishing marks that I can find. The fact that it's very shallow keeps it from getting much use. It's not deep enough to really hold much on the dinner table. However, it is very good for holding eggs that I plan to boil the next day. I always leave them out on the counter over night before boiling them.
I think these eggs look so pretty sitting in this bowl. The colors and shapes go together so nicely.
My rose colored glass bowl is my contribution to Coloradolady's "Vintage Thingies Thursday".