2005

Slovenia’s Chairmanship of OSCE (Organisation for Security and Co-operation in Europe)

Commemorative Cover

SG # 691

 

 

 

 

 

 

2011

Year of the Paris Treaty

 

 

 

 

 

 

 

 

 

2013

Commemorative Cover

 

 

 

 

 

 

 

 

 

2014

600th Anniversary Celebration 1414-2014

 

 

 

 

 

 

 

 

 

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