I wish I had known about that one
I know of one other like it - shown in John Simmonds' Paperweights From Great Britain 1930-2000, page 91
, where it was included as Strathearn. I have personally examined the one shown in the book and I am happy that is an earlier piece most likely by Salvador Ysart. How early is debatable - might be 1940s or 1930s.
The one in the book has canes that are difficult to match, but the one you show has canes that are certainly known in items from the Ysart Brothers days.
I would like to see the other images.