Unified Vietnam, 25 Years Research Institute for Post and Telecommunication, September 17th, 1991, Michel Nr. 2381-2382, Block 93; A stamp with a nominal of 200D was issued in…
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Unified Vietnam, 25 Years Research Institute for Post and Telecommunication, September 17th, 1991, Michel Nr. 2381-2382, Block 93; A stamp with a nominal of 200D was issued in…