Out to dinner last night. Our elderly host had a pair of decanters that belonged to his grandparents and are - by his recollection - probably 19th C
They are about 35 cm tall, with the rims drawn out into flouncy (technical term?) pouring lips, and the stoppers are matched and numbered. The bases have large, circular, ground-out punty scars.
They are faceted all round and top to bottom (11 facets to each). They are the survivors of a set of three. The one that got broken - decades ago - was "yellow". The survivors are purple and teal.
My guess is Venetian, c 1880. Anyone have any better ideas?
Apologies for the photo quality.
Thanks,
Chris