Excellent WWII German vehicle marker type flag. Textbook example has one ring in each corner (see photo) and is one sided. Good size for display at about 38"x31". No damage at all with no noticeable staining. Used to mark vehicles (tanks, cars, trucks etc) or emplacements when under air superiority to indicate to aircraft friendly positions. Popular with collectors as they are directly related to combat situations. This is as good an example as you could hope to find.