Plate, El Lissitzky
Plate, designed in the early 1920's by El Lissitzky, manufacturer unknown. One of the few affordable pieces by the famous russian constructivist. Nowadays quite rare.
El Lissitzky (1890 - 1941) was an important russian constructivist. His work includes paintings, graphic design, typography, photography, and more.
Information about Lissitzky's life and work can be found here.