Ribbon: Blue.
	   Instituted: 11 January 1830.
Discontinued: 1918.
	   Awarded: For civil and military merit.
	   Grades: Originally in a single class, others being added as indicated. On 19 September 1870, swords were authorised for acts of merit in the face of the enemy.
  
    | Grand Cross with Crown: Badge Added 6 March 1899
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    | Grand Cross with Crown: Star Added 6 March 1899
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    | Grand Cross: Badge | Sorry - no picture of obverse | Sorry - no picture of reverse | 
  
    | Grand Cross: Star | Sorry - no picture of obverse | Sorry - no picture of reverse | 
  
    | Commander Class 1: Badge Added 1856
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    | Commander Class 1: Star Added 1856
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    | Commander Added 1856
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    | Knight Class 1 Added (as Knight) 1856
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    | Knight Class 2 Added 1886
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    | Merit Medal of the Order Added 1892
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