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.

Exlibris_German_warrior.jpg (24.82 KB, 836 downloads)