Unified Vietnam, International Stamp Exhibition PHILANIPPON 91, August 29th, 1991, Michel Nr. 2373-2380, Block 92; Seven stamps in nominals of 200D, 400D, 500D, 1,000D (two stamps), 3,000D and…
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Unified Vietnam, International Stamp Exhibition PHILANIPPON 91, August 29th, 1991, Michel Nr. 2373-2380, Block 92; Seven stamps in nominals of 200D, 400D, 500D, 1,000D (two stamps), 3,000D and…