This is a version of Eadweard Muybridge's Phenakistoscope: A Couple Waltzing, which has been exactly straightened to the alignment markers on the original image, the extra elements of the image removed, and the edges cleaned up against a plain white background. This is to allow experience of the art without the technical distraction of the copyright notice, dust, and adjacent repeated animations.
Eadweard Muybridge
1893
<a href="//commons.wikimedia.org/wiki/File:Phenakistoscope_3g07690u.jpg" title="File:Phenakistoscope 3g07690u.jpg">Phenakistoscope_3g07690u.jpg</a>