Moser Brandy (?) glasses - value?

My great-grandfather purchased these when he was in Czechoslovakia in the 1970's. I think they're brandy glasses, although they are pretty small, about 2" x 2". I don't think they've ever been used. The case is in nice condition and the glasses each have a Moser sticker on them. There are two green, two rose and two black.

Anyone have any idea if they have value? Any input would be great. Thanks!