In 2006, the National Bank of Poland launched the issue of the "History of Polish Riding" series, the aim of which was to present Polish military formations and types of armaments over the centuries. So far, five coins have been issued in the "History of Polish Riding" series: in 2006: The Piast Rider in 2007: Heavy-armed knight of the XV century in 2009: Hussar of the 17th century in 2010: Chevalier of the Emperor Napoleon I Guard in 2011: Ulan of the Second Republic of Poland The obverse presents the image of the eagle established as the emblem of the Republic of Poland. Below the eagle there are images of two spearheads on the spars. On the reverse side, in the central part, there is a stylized image of a heavily-armed knight with a copy on a horse and in the background, the outline of a knight with an exposed sword on a horse. At the top right of the outline of the city buildings.  The knights had a special social status and were representatives of the privileged feudal layer. As vassals - people subject to the sovereignty of their sovereign, they were obliged to perform military service and to protect their master in exchange for privileges. Their conduct was based on a special ethos, taking into account the knightly code.