the glass it self looks like Harrach and the decoration looks like Goldberg, Josephinhutte or Rachmann (and probably 90 others that I can't think of off the top of my head).
I think the glass itself looks like Harrach, from the green on the bottom and it's got that color that Harrach tends to have as well as an elegant shape.
I have also seen decoration similar to this from Poschinger..oh, come to think of it Moser also had a similar glass treatment but their green was usually on top.
But, I know what a slippery slope I am playing on
Really, it seems like without a mark or a catalog page that matches exactly all glass attribution is a slippery slope.
So, my guess is blank from Harrach decorated by another company. Either that or a Josephinhutte blank either decorated by Josephinhutte or another company. For some reason, the decoration doesn't seem like Harrach to me.