Artistic depiction of the shrine devoted to the martyrs of the Munich Putsch - Feldherrnhalle. It was located at the square where police opened fire to the marching Nazis. A monument devoted to the Bavarian Feld Marschalls since 1933 was repurposed for the Nazi Martyrs instead.  
The postcard comes optionally with an autographed photo of Adolf Hitler and the top Nazis doing the annual march commemorating the Putsch and its victims (not the cops though).
Additionally you can add a stamp "Und ihr habt doch gesiegt" canceled with a Munich cancel from 1943.   
Photo is also available separately here. 
 
You could say the Nazi’s fight for power started on November 9, 1923 in Munich and ended 21.5 years later in ruined Berlin. For half of this time it actually seemed they had won, not only in Germany, but also across Europe.
On November 9, 1923, when the brute force attempt to take over power in Bavaria failed miserably, their chances looked bleak. Ten years later the slogan “Und Ihr habt doch gesiegt!” (“And you have triumphed after all!”) became the fact and throughout the next decade it only grew more true as Nazis solidified their rule of Germany, became widely admired for their domestic accomplishments internationally and later triumphant on the battlefields across Europe.
The slogan was finally proven wrong on May 8, 1945 and stayed wrong ever since.