Hi Meegs,
Lucky you with the Pelican and its frog.
I have given a lot of thought to your tower with its bloom troughs, and I've consulted others who worked at Bagley. So far, nobody has ever seen your tower before.
I've also gone through the catalogues and other Bagley documents, and nowhere is there anything like your tower. That in itself is not proof, of course.
What makes me sure it is not Bagley is that the bloom trough which is sitting on your tower has its inner edge extended out to fit around the tower and hold it sitting on that ledge. This is clear when you look at the magnified version of your second picture. Bagley's did not make a bloom trough in that shape, or anything like it. Perhaps you could show a photo of that bloom trough separate from the tower, Meegs.
The larger bloom trough around the base of your tower could well be Bagley. But looking at the base of your tower, maybe it was meant to have something closer fitting.
The suggestion that the Quebec bloom trough might fit on the top is interesting. The Quebec bloom trough doesn't have a hole in the middle. It has an indentation big enough to hold the base of a thin candle, with a bloom trough around it. The one I'm holding on my desk just about fits my thumb into the candle indentation, up to the top of my nail. So the only way it could go onto your tower would be if it was perched upside down and balanced on the top.
Your tower is a fascinating piece of glass, and I would love to know who did make it. So much glass was imported into this country (New Zealand) that it could have come from almost anywhere. It would need to be a company that made bloom troughs, so that narrows it down just a little.
I hope you are not too disappointed with this information. Its still a great find.
All the best
Angela
ps do you ever come up to the Bay of Islands?