“Playtime.” 1910. Oil on canvas. Signed, inscribed and dated “Ch. VAN Den Eycken Bruxelles. 1910” on the lower right. Image courtesy Christies. In the public domain in the United States because the artist has been dead over 70 years. via https://commons.wikimedia.org/wiki/File:Charles_van_den_Eycken_-_Playtime.jpeg