hello Laurie, welcome to the GMB

shame you can't run down the maker - unfortunately, a not uncommon event with drinking glasses.
My personal opinion would be that this shouldn't prevent you from selling, assuming that is what you wish to do - people will buy because they like the look of these pieces. Assume these are lead glass i.e. they ring well when struck, and looking at this goblet, there is a lot of cutting, and they appear to have some quality, although these facts alone give us no real help regarding age. Do you consider the States to heve been the origin of these pieces?
People like to see the underside of the feet when it comes to stemware - this can sometimes give clues to age, and of course, someone here may recognize your glasses and be able to help, so fingers crossed.
