Open circle with two verticals , by erich buchholz , 1920 , abstract , Constructivism style , Circle
A black and white image of a circle with a letter in the middle.
A black and white image has a square in the center. Inside the square is a large circle with a thin white line going through it. There is a door in the middle of the circle. The door is slightly ajar and there is a small amount of light coming out of it. At the bottom right corner of the image is the number "B" and the year "80".