Unified Vietnam, 40 Years Dam Construction Committee, May 22nd, 1986, Michel Nr. 1683; A single stamp with a 1D nominal was issued in perforation 11:10.75. There were some…
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Unified Vietnam, 40 Years Dam Construction Committee, May 22nd, 1986, Michel Nr. 1683; A single stamp with a 1D nominal was issued in perforation 11:10.75. There were some…