I am sorry I have no information for you in response to your question, but since you seem knowledgeable about glass, I was hoping you might be able to help me.
I have been looking for Seneca glassware but do not know the name of the pattern.
It is cut 980, pattern 164, or stem 164, I'm not sure.
If you ever have such an item up for bid, I would be happy to be among the bidders!
If you know how i can trace the nale of the pattern, I will appreciate your info.