Order of the Crown (Prussia)
The Royal Order of the Crown (German: Königlicher Kronen-Orden) was a Prussian order of chivalry. Instituted in 1861 as an honour equal in rank to the Order of the Red Eagle, membership could only be conferred upon commissioned officers (or civilians of approximately equivalent status), but there was a medal associated with the order which could be earned by non-commissioned officers and enlisted men.
Source: Wikipedia — Order of the Crown (Prussia) (CC BY-SA 4.0)