Below is the response that I have received from Corning Museum of Glass:
------------------------------------------------------------------------
Dear Mr. Lethbridge,
Thank you for your enquiry about an amber water pitcher. I must confess that I am not an expert on this type of glass. Such glass has been made in England in the 1880s, but it was also copied later, e.g. in Italy in the 1970s. Several companies in England shared the earlier production.
If you want to do some research in this area, I recommend the Rakow library of The Corning Museum of Glass. The catalog is accessible online (
http://rakow.cmog.org).
With my best wishes,
Yours,
Dedo von Krosigk
--
Dr. Dedo von Kerssenbrock-Krosigk
Curator of European Glass
The Corning Museum of Glass
One Museum Way
Corning, New York 14830-2253
Tel. +1 607 974 8312
--------------------------------------------------------------------------
I am pretty sure that it is not of the 1970s but will have to accept that we don't know who made it or when. I will place it on my shelf with the other water pitchers and enjoy the view. If I come across any other information I will share it with this group.
Thank you to all who contributed their thoughts and suggestions.
Sid