At First Thought, I thought these may be something Fostoria would do, They did make one with a base kind of like that, but looking through My Fostoria book I came up empty. Beside the only thing I have ever seen from fostoria as is Acid etched, your for one look like Cut Glass. The next company to consider would be Anchor Hocking, they may have put out that style, I may look around a bit later and see. Anchor put out the manhatten which is similar in style, but not the same for sure, and beside I don't think Anchor did any etching at all. There are so many Glass makers, and most of the common pattern can be identified easy enough, but uncommon one like yours may present a challange for sure. Anyway sorry I can't help at the moment, but figured I would for sure have to pipe in on the Glass vs. Crystal question and Handblown. First you have Lead Crystal, Crystal Glass and Glass. From the looks in the pic I would say glass, but this is hard to tell, for sure it is not lead Crystal, the etching does not have the sparkle. The tap method work after you have had some experience. Grab a glass out of the cupboard and tap this gentlly with a fork, will probably have a thud sound. Lead crystal will have a wonderful ring, and the tone will substain for a couple of seconds. Now Crystal glass will usually depend on the amount of lead content, Rings closer to the sound of Lead Crystal usually being of some quality, and closer to a thud well this is glass that has a small amount of lead, usually just enough to call it Crystal Glass, also you can try the sing method which works with lead crystal, a little water and rub the rim lightly and see if it sing. As for it being Handblown, I don't think so at least not because it is hollow. Most Handblown you can see the ponif on the bottom where the glass was broken off the rod, sometimes it is ground down and polished and sometimes not, look at the base of the Bowl part of the goblet and you will see it if it is handblown. The only other thing I would add is I would place these at the late century age 60's to 80's, at least based on the looks of the style. They are most unique for sure, and hope we can find the pattern, I would like to know for sure. Any thanks for posting
