Portraits of women by German artist Oskar Zwintscher. Living from 1870 to 1916 he studied art in Leipzig and Dresden. Often associated with the Jugendstil movement.

Mirror portrait. 1914.
Mirror portrait. 1914. In the public domain in the United States because the artist has been dead over 70 years. via https://en.m.wikipedia.org/wiki/File:Zwintscher-Mirror.jpg
Bildnis mit narzissen. 1907.
Bildnis mit narzissen. 1907. Image © 2019 MutualArt Services, Inc. Fair use license. via https://www.mutualart.com/Artwork/BILDNIS-MIT-NARZISSEN/DF308A7656FDD644
"Sehnsucht." 1895.
“Sehnsucht.” 1895. In the public domain in the United States because the artist has been dead over 70 years. via http://chasinglife.be/sehnsucht/