Can i throw in the ring, "Portuguese" for the one with a green handle and green foot? We used to import in the 1970's for John Wuidart (anyone remeber him, a real character who opened waterford Crystal's London office and promised them sales of £1m in the Uk within 5 years. I thin he did it in 3 and they gave him a brand new XJ6 Jag as a gift) a green handles clear bodied tankard from a Stephens? factory in Marinha Grande. One is sitting on my credenza in my office ( haven't a clue what a credenza is but mine is a nice rosewood sideboard low sliding cabinet!)
The green opal jug is a beauty, Murano or perhaps Whitefriars, they did a ruby one similar but do not have sizes! Did W/Friars do green opal of this hue?
Not a lot of help but......