Thanks very much for the the further explanation. I'm very interested in the origins of these pieces, as the original Augustsson vase (the B√∂rnevase, as I've seen it called), the vases produced by Kotik and the Beraneks at Skrdlovice in Czechoslovakia, and vases by Magnor in Norway are often confused. I'm interested to know what papers you are referring to, if you know anything about Augustsson (there's not much about him written in English), and when he designed the original vase.
I've noticed slight variations between some of the Aseda decanters. For example, the brown one in my attachment has parallel ridges sculpted into the sides, wheres the green one has only the horseshoe shape. Any significance in that difference in terms of designer? The label is a US import company label, btw.