Gwion, they are still made I believe. I see some websites still selling new sets of these so there must be a current market - perhaps for tourists visiting wineries, etc.?.
My son loves them as he finds them almost impossible to knock over so no risk of the contents being wasted! :lol: Where I live they seem quite easy to find in charity shops and are not too expensive (both of which are especially important when you're a teenager/student as he was when he started collecting them. When he finally leaves home and takes them with him I am going to have so
much more glass cupboard space!) :lol:
I have seen earlier patterns which are much fancier than these - they include prunts on the stem and so on - so they have been made over a long period of time in one way or another.