1024-1026 100 Years of the Universal Postal Union (UPU)

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Date of Issue March 28th 1974; Special-postage stamps

- Eugène Borel (1835-1892),

 

  1. Director of the UPU International Office,

 

- Heinrich von Stephan (1831-1897), Founder of the UPU

 

- Montgomery Blair (1813-1883),

  United States Postmaster General

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