Curator's note: 

Swann Gallery gave the name "O.K." to this work because it features a monograph composed of the letter K within a circle 

Apparently Swann was unaware of the artist's name - Franz Krausz

The K is the first letter of the artist's last name - Krausz - and the circle is either an embellishment or a facsimile of a copyright symbol

Krausz' use of this monogram may also be seen on this poster

In later posters Krausz wrote out his last name as his monograph

DJW