Thinking of the assumed origin of this goblet, and in view of the lady's knowledge of States cut glass, I mentioned this to Jane Spillman and included the link in my communication, and although we're not really any further forward, thought it would be of interest to members to see her reply.
A very big thanks to Jane Spilman for taking the time to reply, and for giving us permission to reproduce her comments here.
""I was able to get a very small picture of the goblet and all I can say is that I've never seen anything like it in terms of cut glass, which is what the site says it is. The fact that it is cut in such an elaborate pattern, and that it is colored, make it of interest to cut glass collectors, even though it is not identified. I would agree that it dates from 1880-1910, but that's just guesswork on my part. I doubt if it's American since it's not like any American cut glass I've seen; I would guess it's European, but I'm not positive.
So I'm afraid that I really can't help you. It's certainly an interesting piece, though.
Regards,
Jane Shadel Spillman""