Yugoslavia- 6/1; 6/2; 6/3

 N°- 6/1

• issued: ***
• nominal: 0,20 dinar
  
• traveled: OPATIJA 1, Yugoslavia (Croatia) / 21.04.1967.-TO-> RIJEKA,Yugoslavia (Croatia)
  
• Socialist Federal Republic

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N°- 6/2

• issued: ***
• nominal: 0,20 dinar
• +postage: 0,05 dinar; 0,05 dinar
  
• traveled: HVAR,Yugoslavia (Croatia) / 8.06.1968.-to-> ZAGREB,Yugoslavia (Croatia)
  
• Socialist Federal Republic

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N°- 6/3

• issued: ***
• nominal: 0,20 dinar
  
• traveled: from-to OSIJEK,Yugoslavia (Croatia) / 18.10.1966.
  
• Socialist Federal Republic