A very interesting flyer/poster! I agree with Bernhard that the paperwork dates to 1931-32 and is from Austria.
After the Beerhall Putsch, the National Socialist Party of Geman-Austria (NSPDOe) split, one of the two (but not the only NS groups in Oesterreich) emerging NS organizations was the independent Austrian National Socialist Party, led by Dr. Riehl and Schulz. ( Many author's refer to this group as the DNSAP, but this is incorrect.) The DNSAP was the German National Socialist Workers Party of Czech. (Bohemia and Sudetenland) led by Dr. Rudolf Jung. The brother
organization in Austria was named the NSPDOe "Nationalsozialistische Partei Deutsch-Oesterreicher", not the DNSAP.
Both the DNSAP-Czech. and the NSPDOe-Austria came under the umbrella of the "Deutscher Nationalist-Sozialistischer Verein" also led by Dr. Riehl and surprizingly, Hitler's NSDAP was also a member at the time.
On May 4, 1926 the pro-Hitler Nazis split to form the National Socialist German Workers Association with most of the Austrian
Nazi Party members joining. In August of 1926 the name became NSDAP (Hitlerbewegung) officially. They recognized
Hitler as the only German/Austrian Greater Reich Leader and for adopting all of the German NSDAP's Party organizations
such as the HJ, SS, SA etc., and the Party ranking structure.
It can be a bit confusing following the paths of all of the different early NS groups, but it is interesting and most collector's
do not realize that the Austrian DAP and National Socialist Party were older than Germany's version.
The black and white, swastika, hammer, and oak branch design of the Austrian/Czech National Socialist Banner predates Hitler's design by several months,