Germany Air Fleet Society WW1 pane

Dec. 1916, Luftfahrendank Set of 25 as a Pane. It’s not found in Jackson catalog For God Kaiser and Fatherland. According to Kiddle, this set was issued by the Deutscher Luftflotten Verein (Geman Air Fleet Society), as a fund raiser for the war effort. The inscription “Copyright W. Sanse” appears in the photograph oval, but not on all stamps. These must have been printed after Nov. 21, 1916: The Austro-Hungarian Ruler Franz Joseph died, and Crown Prince Carl became Kaiser Carl 1 after that date. The rulers of Germany, Bulgaria and Turkey are shown: they did not change during the war