International Orders Union Flag

International Orders Union Flag

According to the English information at http://www.europascouts.at/Iou/iou_en.html this is the flag of the International Orders Union, or the "society for heraldry, genealogy and the nature of orders." It seems to be an international body, and at http://www.europascouts.at/Iou/struktur.html we get to see a list of members.