Frank
Very intersting topic, I was very surprised and pleased to see in the link you gave, a vase which I have seen in a Antique shop not far from were I live, I took a trip to this shop today and it was my lucky day, the vase was still there, I know the shop owner quite will so I was able to have a good look at the vase, it is a wonderful piece, I forgot to measure it but I would say it is about 12" high by 6" diameter at the top, and it is signed, H Cook No 72.
Now the question who is/was H Cook and was this a limited edtion of, how many? and who was the glass firm?
Here are two photos, the one of the base shows the signiture double as the base acted like a mirror