No, I didn't say it might not be Russian

Newman has a page of glass designated as Bohemian French and German. Given there is no id for any of the pieces, I wonder if that is a best guess as country of make otherwise why not definitely describe each from the country they are from? On the other hand he might have known exactly where they were from and gathered them together as a group shot, from the V&A for example. I don't know, I've not searched the V&A collection - well I have

but only in relation to my plate and I can't remember what was there. I do recall seeing that bright pink on white glass though at some point/somewhere. Maybe French was my other thought but that wording on the base is strange - cop? could it be russian for Cup? I have no idea.
There are a few interesting bits of enamelling on your beaker.
1) The orange dot which does appear to be the very similar to those on the vase in Newman but then many countries might have used this particular orangey yellow enamel
2) the little black 'arrows' around the flowers which is quite a distinctive device - I couldn't find any other pieces with that on
3) The bright pink 'teardrops' - the shape reminds me of teardrops on my Russian plate, the colour , I don't know? might that be English? it's a very bright pink, quite distinctive
4) that bright red band of enamel - that's a superb red.
It might take a bit more looking lol

it could be a while - but definitely worth hunting for I would say.
m