HI MattW,
Well!! its time for me to throw a spanner in the works,
Lets start with this comment ,
"The inclusions are typically signs of older glass but is
easy to replicate if a modern practitioner really wanted to do so. "
Sorry but I have to disagree,inclusions such as these occur from poor temperature control in the furnace and poor quality materials in the batch,for a modern glass maker to replicate these they would also need to replicate the conditions that the originals were made in,today's materials and furnaces are much more refined and accurate re temperature etc,and why would someone want to reproduce cr-----p(sorry !! poor quality) glass

The inclusions on these glasses are obviously silica and iron and have nothing at all to do with "forest Glass" production.
Now onto Antwerp1952's comment "they remind me of two of my glasses both of which I believe are "repro".
The first glass is NOT a reproduction an 18th c glass , it is an early 20th interpretation of one( Italian probably but Venice I don't know

), no 18th c twist glasses have the twist going from left to right down the stem,therefor it cant be a
reproduction of an 18th c piece.
My opinion of the 2 glasses , I believe they are 18thc pieces ,probably the 2nd 1/2 and more than likely from the Low Countries, ie Northern Germany, Belgium ,The Netherlands, the bowl forms,the elongated almost inverted baluster stem I come across frequently along with the crude engraving, 1 appears to be poor quality lead and and the other non lead, as with everything in life you will find the good and the less good , glass was made for a market the best glass for the top end and whole heaps made for the lower ends, not everyone could afford the best top quality glass,so as with today there is always something similar at all price levels for the many different sizes of pockets,
"If you are going to the Cambridge Glass Fair on Sunday"

I think it's a long way from Greece for a day trip , I could be wrong though,
Cheers ,
Peter.