Baccarat dessert wine glass question

Hello,

I was recently at a garage sale and I saw this set of baccarat dessert wine glasses. I have been slowly collecting other baccarat pieces since. I've done a lot of research about these but havent found anything about this set. They all have a wheat strand etched into each one. I wanted to know the history behind this set of glasses. I have no clue how old they are, I've seen the history about sets similar with etchings but nothing with this specific wheat like symbol. They are remarkable. Any info specifically about the history about this specific set .