North Vietnam, 3. Congress of the Young Workers Union, March 18th, 1961, Michel Nr. 158-159; Two stamps were issued in perforation 11:0. One with a nominal of 2…
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North Vietnam, 3. Congress of the Young Workers Union, March 18th, 1961, Michel Nr. 158-159; Two stamps were issued in perforation 11:0. One with a nominal of 2…