Well, These make me drool a lot
I have been searching my books the past hour trying to find this pattern. Thus far I have come up empty handed. I'm Pretty sure what you have is a Cambridge pattern. This is in their Acid Etched style, Little too fancy for a Fostoria. There are others who did this style but 90% of these out there are Cambridge, Fostoria was a bit more simple on the design but had fancy stems. Anyway I would say you have a Cambridge Elegant Depression era Glassware. I think I need to get me a good Cambridge Book, You could spent a few hours at replacments looking at the various Cambridge patterns, but you will find lots. These Acid Etched Glassware items, hold pretty good value many will easily pay $30.00 to $50.00 for a pair of Wine Glasses. I have to go back and look again, but I think you have parfait Glasses, these may bring you a bit more. But a good ideal of Value is to go to Ebay type in Cambridge Stemware, go to Completed listing and see what you find. You have some fine Glassware for sure. Thanks for posting