GG, that's a great find! I love the blue. Vintage pyrex nesting bowls can fetch a pretty penny on ebay.
what I have left from my late mom's collection.
I broke one of the large ones a couple of years ago and nearly cried. Accidentally hit it against the sink when I was washing it.
The two pour spouted ones on the right are from the same set, I think it's called Americana...or Early American...something like that. The one that originally nested in the middle of those two was the one that got broke.