Helsinki - 30 July 1975: stamps issued in the GDR to mark the signing of the Helsinki Accords as the final act of the Conference on Security and Co-operation in Europe (CSCE) https://t.co/vWDzwnHIIT

12:22am PDT - July 30th, 2021

30 July 1975: stamps issued in the GDR to mark the signing of the Helsinki Accords as the final act of the Conference on Security and Co-operation in Europe (CSCE) https://t.co/vWDzwnHIIT

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