The Vintage photo of the day is Rayography [Kiss] and was taken by Man Ray in 1922. Man Ray is well known for his photographic experimentation and for being an “avant-garde” photographer in Paris in the Twenties and Thirties. He also experimented in several other disciplines including painting an sculpture.
Rayography — [Kiss] by Man Ray 1922
The image above is a photogram which means it was taken without a camera. Faces and hands were placed over photographic paper and exposed to light. Man Ray preferred to call the photograms he created Rayographs (after himself).