This work close crop image of Kirchner's 'Self-Portrait as a Soldier' is within the Public domain and thus free from copyright claims given that Kirchner died in 1938, surpassing over 80 years ago.
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https://creativecommons.org/licenses/by/4.0CC BY 4.0 Creative Commons Attribution 4.0 truetrue
Captions
This image is a closer crop of Ernst Ludwig Kirchner's painting 'Self-Portrait as a Soldier', focusing specifically upon the background female figure.