Initial on crystal goblet-HELP ID

[kizzmyglass]

I found this huge (11" tall) crystal goblet for lack of a better word-Faceted cut stem-gold gilting on rim-6 controlled bubbles-and this mark on the base in gold-Ive searched EVERYWHERE! PLEASE even suggestions I can research myself is appreciated!!

[maeday76]

You've really got to show the whole thing. A verbal description doesn't really help here. 

It's possible you have a candle holder, but I can't see it to advise further. 

[kizzmyglass]

Thank you for your reply-Here are pix of it-

[maeday76]

Have you checked Fostoria?

[wastingtime101]

I've seen that mark before but can't remember if it was ID'ed or not.

Here's a listing for the same item which can be used as a reference point on what's out there.

https://www.ebay.com/itm/334913245210

[kizzmyglass]

Thank you!! Its the first time anyone has been able to refer me anywhere! I pride myself on my ability to ID most glass & pottery items but this has been years!! Thank You!