It looks like from this forum there were 3 known Jackets, lets update that to 4.
The one i have was gifted to me sometime in the mid to late 90's by a family friend who ran the "AppleWorks User Group" (I believe it was formerly the Claris Works User Group). Not certain exactly where and how he obtained the jacket, but i assume it was given to him by Apple at some Apple event or something like that. Shortly thereafter he then gave it to me. I knew it was a special jacket and thusly has only come out on special occasions, and when it does its a head turner for those lucky enough to recognize the vintage icons.