A genuine bottle
At one of the vendors' tables, a man was showing off HIS bottle and its CASE. I was fascinated by the case so I went up and asked him "where did you get the case!" It turns out that I was talking to a man who had worked on the first reunion movie in 1985, and that is a genuine special effects bottle used in that movie. The case was specially made by the props department. The bottle is sitting on top of a photo album John shared with me - photos from the set, including Hayden and Barbara.