Proof, red, yellow, green and blue paints
Description of obverse and reverse
Obverse: On the left-hand side, a stylized image of Władysław Strzemiński’s 1934 "Unistic Composition 13". At the bottom and on the right-hand side, an image of the Eagle established as the State Emblem of the Republic of Poland. Around the Eagle, an inscription, 20 ZŁ and after a separator dot, an inscription, RZECZPOSPOLITA POLSKA (Republic of Poland) and the notation of the year of issue, 2009. The Mint’s mark, M/W, under the Eagle’s left leg.
Reverse: Against Władysław Strzemiński’s 1929 "The Composition of Space", on the left-hand side a stylized image of the profile of Władysław Strzemiński and on the right-hand side, a stylized image of a palette and three brushes. On the palette there are red, yellow, green and blue paints. Underneath, an inscription 1893–1952. At the top, an inscription, WŁADYSŁAW STRZEMIŃSKI. At the bottom, an inscription, WŁADYSŁAW STRZEMIŃSKI, written with characters designed by the artist.