Tony & Chris,
What a wonderful discovery, Tony. You have found the missing link between Fostoria American and the British production, that so puzzled us before I put my little jade pot up for sale.
You will find my pot illustrated via http://www.bernard.cavalot.btinternet.co.uk/dj7cp2_text.htm
Note that this was written before Chris and Val came up with their much more accurate material and dates on Davidson Jade.
In my eBay listing, I included the following two points:
1. "It ... carries a "MADE IN ENGLAND" mark in relief on the inside base, which is typical Davidson wording and was punched into the mould using Davidson's mouldmaker's standard set of letter punches."
You are aware of my enthusiasm for identification by comparing punched lettering and numbers. These punches were expensive tools and were often in use for many decades. Sowerby used two different sets between the 1930s and the '60s - I believe this just indicates that they had two master mouldmakers, each with his own set of punches.
2. "The pattern is Fostoria's "American" range, and appears to be identical in all respects other than colour to a pot shown bottom centre in a sample page of a recent book on Fostoria "American" at ..."
Unfortunately the link at the end of this no longer works. Suffice it to say that measurements matched exactly, and if the mould did not originate from Fostoria, via National Glass, it was an amazingly close copy, too close to have happened by chance.
You have also explained why Bagley did not associate a name with this pattern at any time. It already had one!
Brilliant. I wonder how many people have looked at that advertisement and not realised its major importance to the history of C20 pressed glass, not just in the UK, but internationally.
Tony - could you be so kind as to post an issue number and/or date for this magazine, so that we can cite it properly.
I have had a most enjoyable week. Almost exactly seven days ago we were arriving on Murano. Your news is like the icing on the cake.