Dave — As it is so distinctive I am sure that I would have remembered it, had I ever seen one. So, as I an sure that I have never seen one, it is probably not British.
Also the base star is not typical of any of the larger British pressed glassworks, whose base stars were much more accurate copies of cut base stars. We were discussing Jacobean by Davidson and Inwald recently, and the base star is one way of telling them apart. Your base star is more Inwald than Davidson.
Bernard C.
