I've only ever seen one of these before, in pale blue. It was at my first ever talk on glass, given by the Scottish Glass Society, waaaay back when I first got interested in it. Fritz Akerboom was there, I wasn't aware of his importance at the time. I learned there that this was a Gluck! jug, (and hadn't forgotten!) but Robbo got there first, with more info. than I had.
Why am I not surprised? hiya Robbo!