Hello,
I haven't checked the message board for some considerable time, but Adam mentioned something that I thought I ought to check out - so here I am.
I came across this entry.
The vase is Powell (Whitefriars) Pattern Number 9168 in the 1938
catalogue and produced in 5 sizes 4", 5 1/2", 6", 7" and 8 1/2" diameter.
Hope this helps, Nigel Benson