Clock , by lyubov popova , 1914 , Cubism, Cubo-Futurism style
A black and white drawing of a circle with the letter F in the middle.
A black and white drawing of a circle. The circle has many different shapes in it. There is a large letter H in the middle of the circle. There are several smaller shapes surrounding the letter H. There appears to be a clock on top of the larger circle.