If that is the jacket that was just on eBay it was formerly owned by John Haller of Minneapolis. Most of his collection was disposed of a few years ago after he passed away. I had bought most of the collection and ended up with about five different club jackets. I don't think that they were made for any particular convention but were available in a couple of different styles by the club or a chapter many years ago. That is one of the nicer styles. Wear it proudly as John was member #127.