The back of the Jung postcard is postmarked 1921. It has correspondence,a small printers logo that looks 2 fingers holding what looks like a weight with a boy and lion (maybe.It's pretty small),and WIA under it.
On edge printed in very small letters is: Wia-kunstlerkarten-Urlagg,Teplitz-Schonau. Entmurf von Fr.Jung.
Here's something else that might be in the renderings of brave heroes, warriors theme.
A exlibris dated 1915. On the back of this one is: Einzelpreis 10 Pfg. Tiesdruck von O. Felsing, Charlottenburg.
Bill,where did you get the Wonton & his ravens photo?Nice one.