Reverse In the central part, the word 'MARKKAA'. Above the word is the denomination – the number 20. Below the word is a decorative separator in the form of two oppositely directed ornamental lines with a dot between them. Below the separator is the year of minting '1912'. The center of the coin's reverse is additionally highlighted by a braided rim. Near the upper edge of the coin is a decorative element of seven dots, visually indicating the beginning of the inscription: 5,806..GRM. KULTAA. 0,645..GRM. KUPARIA. The rim is decorated with denticles pointing towards the center.
Obverse In the central part is depicted the full Coat of Arms of the Grand Duchy of Finland – a double-headed eagle, whose heads are crowned with two crowns, a third, larger crown above them. All are connected by the ribbon of the Order of St. Andrew the Apostle the First-Called. On the eagle's chest is a shield with the titular coat of arms of the Grand Duke of Finland, crowned with a princely crown. Around the shield is the chain of the Order of St. Andrew the Apostle the First-Called. In its right talon, the eagle holds a scepter, and in its left – an orb. Under the tail, on the right, is the mark of the Director of the Helsinki Mint – the initial 'L', Johan Conrad Lihr. At the bottom, along the rim, in a semicircle is the text: FINLAND SUOMI separated by a stylized rosette of seven dots. The rim is decorated with denticles.