I have just been leafing though "A Short History of Glass" (1990, Chloe Zerwick, pub. in association with the Corning Museum).
On p.70, there is a picture of a couple of items illustrating the chapter "American Glass", which shows a footed goblet and a covered pokal in aqua glass with drippy bits and fine strapping. The lid of the pokal has a coin in a bubble and a hen on top.
It is described as;
"Blown jug and sugar bowl with furnace-worked decoration. New York State, c.1835-1850 ...
Aquamarine glass is typical of New York State Glass, and these pieces were probably done in the worker's own time."
I immediately saw a big similairty between these bits and these fish.
