Vietnam 1975 Post War Sets Perf Imperf OG NH Rare. Rare selection of Vietnam 1975 Post War sets, perforate and imperforate. All issued after the war and very rare. VF, OG, NH and a great find. The item "Vietnam 1975 Post War Sets Perf Imperf OG NH Rare" is in sale since Tuesday, July 30, 2019. This item is in the category "Stamps\Asia\Vietnam". The seller is "anthonysnj-stampsandcoins" and is located in Englewood Cliffs, New Jersey.