Nigel, Totally understand what youre saying, narrowing it down is all im trying to do,
i dare say we could both hold the decanter in our own hands and get a much better idea,
Im 100% sure mine is early 19th C, and if you had it in your hands you would agree immediately,
its hard from photos sometimes.
Im sure Bernard will take them to the glass fair, i will try to make it.
I reserve the right to be proved right

but accept i am more likely wrong .
Are you exhibiting? Hope to meet you in May,
Cheers
Andy