Hello David,
It was still interesting to me as I thought ALL Bristol Blue glass was old...............for some reason I thought they had stopped production of THE actual "Bristol Blue".
The technical stuff about the colour and content of the glass is also interesting but a little hard to apply without a chemistry set and perhaps a scanning electron microscope??
By the way...........I bought 2 pieces of REAL Chance glass today and I didn't even need to email you to check............all your training is paying off..............now hurry up with the book so we can all be millionaires!
Kind regards
Cat