Obverse: depicts a castle of towers on a shield held by two lions. On the top, the inscription 'FREIE UND HANSESTADT HAMBURG' (Free Hanseatic City of Hamburg).
Reverse: the reverse of the coin shows a crowned eagle with a shield on its breast. The name of the country 'DEUTSCHES REIC' and the year of issue are embossed on the top. The denomination 'DREI MARK' (3 marks) appears at the bottom.