Thanks Anita, I have read about Opaline glass somewhere but remembered nothing, next time I will be a bit more clued up.
Craig, it is just like your smaller one, it has the same curved wings and it is hollow inside - running up the neck and tapering off behind the eyes.
This one is 7ΒΌ inches tall, 4 long.
I took a few more photos earlier but did not shoot one from above (can do that tomorrow), here are some of the head and one of the label.
John.