Mbam map of the Weimar Republic in the style of a Wikipedia map I found of the actual Weimar Republic.
The differences are, border changes with Hungary, Czechoslovakia, Italy, Belgium, Denmark, Poland, Lithuania and the SEA.
Inside differences between this and the actual Reich in 1933 are that Austria is in it, the Saar is in it, Danzig is in it, that it still has Eupen-Malmedy, the Těšín area and Memel land, that it did some sea reclamation that Mecklenburg is united, that Hannover is a free state, that the greater Hamburg protocol was done, that Oldeburg lost its exlaves, that the Frontier March of Posen-West Prussia of divided and that Saxony-Anhalt and Hesse-Nassau got divided in two (in OTL Saxony Anhalt was divided into two provinces and into the governmental district of Erfurt, which was in a personal union with the Gaul leader of Thuringia).