This souvenir sheet was issued on 3 September 1937 to commemorate the 9th Party Rally in Nürnberg (Nuremberg).
MiNr. Block 11 is identical to MiNr. Block 9, except for the addition of a vertical side overprint on each stamp, “REICHSPATEITAG NÜRNBERG 1937.”
For related issues, see the 1937 issues commemorating Hitler’s 48th Birthday, the National Stamp Exhibition, and Cultural Promotion.
Several commemorative cancels were available at the Nürnberg Rally, 6-13 September 1937.