North Vietnam, Author and Artist Congress, November 18th, 1961, Michel Nr. 185-188; Four stamps with nominals of 12 xu (two), 30xu and 50 xu were issued . There…
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North Vietnam, Author and Artist Congress, November 18th, 1961, Michel Nr. 185-188; Four stamps with nominals of 12 xu (two), 30xu and 50 xu were issued . There…