I don't know, maybe these wine glasses are Baccarat from the beginning of the 20th century. They all have the same kind of lace pattern in the middle of the bottom side. I am not certain about the provenance or the approximate date of fabrication. I am from Bucharest, I have these glasses from my grandmother as a heritage. If it is necessary I will try a better photo, now my batteries are low.
[img size=150][/img]
And if it possible can you give me an approximate price? I have one, I just needed to check for some reasons. Thanks a lot.

I searched again on the net for information.
I used a magnifying glass searching for that etched mark with a stem, decanter and drinking glass - it is not there. All my glasses have an etched pattern like scratches (intertwined lines), but they are not scratched or damaged elsewhere.
I still think these are valuable and old glasses and I can tell for sure that the they have a good quality of sound when tapping

Could anyone help me please?
If they are not valuable, I can't afford an expertise.

OK, I will try to help you. You only have one glass? A set of 4,6 or 8 would be better to get a good price. No markings? Usually Baccarat is signed along with a sticker most times. Is it crystal? a nice ring when you flick it with your fingernail. Here in the USA one glass would bring around $5.00

@carolyn67
It has a very beautiful ring, but I said it was not Baccarat because it hasn't that specific mark (I read on another site), it has only a kind of lines intertwined in the middle of the bottom side.
I have a set of 6, and they slightly damaged by time, the defect cannot be seen without magnifying glass.They don't have scratches, only a few points missing on the brim, you know what I mean.
I heard that even unmarked glass or crystal can be valuable. I think that maybe $5 it is not worth selling them, being a family memory with such a beautiful sound. And an old and beautiful pattern. Thanks for your answer.

Your glasses are etched. A few points missing on rim? Does that mean chips. Let's say your set of six glasses are crystal and good condition. Are you living in Bucharest or in USA. I don't know how economy is if your in Bucharest,, but here in States I have seen glasses like your's priced between $15 to $20.00 each because you have a set makes price higher.

Thanks, you are very kind.
Can I ask you please if you know about etched champagne saucers? I also have a set of 6, they are not hollow stemmed but I (and others too)think it is better, in order to keep the champagne cooler.
Are champagne saucers (etched) cheaper than wine glasses? Or maybe I will ask another question another day.
[img size=150][/img]