Gill,
I don't know for sure if your Libbey glasses were done in different versions or not, since I didn't really pay much attention to them back in the 80s when clubs were offering these glasses along with their drink special of the day, which in many cases had a name related to something sexual. Most people never kept them, although they were allowed to, since the price of the drink covered the glass. I have seen some that were nude men and woman torsos, but I'm not sure if they were made by Libbey too. I think many people who collect bar & tavern related glasses might have the most interest in these items, but those I know who are into this type of collecting are rarely interested is who made what etc., like a serious glass collector might be, but instead they collect these items because they like them is all, a memento of a night out on the town maybe, or just as novelty items to display in their homes, some of which have an area set up like a bar. --- Mike