Unified Vietnam, 25 Years of Manned Space Flight, April 12th, 1986, Michel Nr. 1672-1678; Seven stamps with nominals of 1D (two stamps), 2D, 3D (two stamps) and 5D (two stamps) were issued in perforation 13 and imperforate. There was also a souvenir-sheet with a 10D nominal that was only released perforated 13.

Here is the mint perforated set. Stamps sold in Vietnam were made without gum, while stamps sold by the official Vietnamese stamp agency were sold with gum.

Here is the mint imperforate stamp set

Registered air mail letter sent in October of 1986 as a mixed currency franking from Ho Chi Minh City to Klewitz. The letter carries half of the perforated Space Flight set plus stamps from the Labor Day, United Nations, KPdSU, Traditional Houses and World Food Day sets. The World Food Day stamps were still denominated in old Dong. All other stamps were already denominated in new Dong. The Vietnamese Government conducted a devaluation of the Dong on September 14th, 1985. This meant that all stamps issued prior to this date were only worth one tenth at the time of mailing. The overall postage hence amounted to  4 oD =0.40 nD. plus the stamps in new Dong (33D)  for 33.4 nD. Green Fulda custom cachet on front.

Registered air mail letter sent in October of 1986 as a mixed currency franking from Ho Chi Minh City to Klewitz. The letter carries the other half of the perforated Space Flight set and souvenir-sheet plus stamps from the Traditional Houses and Hai Phong Liberation sets. The Hai Phong Liberation stamps show a significant passer-shift making the lower columns of th bridge appear white. Error stamps and souvenir-sheets on postally used cover are very rare. The World Food Day stamps were still denominated in old Dong. All other stamps were already denominated in new Dong. The Vietnamese Government conducted a devaluation of the Dong on September 14th, 1985. This meant that all stamps issued prior to this date were only worth one tenth at the time of mailing. The overall postage hence amounted to  20 oD =2 nD. plus the stamps in new Dong (33D)  for 35 nD. Green Fulda custom cachet on the reverse.

Registered air mail letter sent in September of 1987 as a mixed currency franking from Ho Chi Minh City to Klewitz. The letter carries half of the perforated Space Flight set plus stamps from the Roses, Prehistoric Animals and Day of the Invalid  sets. The Prehistoric Animals stamps are imperforate. Imperforate stamps on postally used cover are very rare. The Rose and Prehistoric Animal were still denominated in old Dong while all other stamps were denominated in new Dong.  The Vietnamese Government conducted a devaluation of the Dong on September 14th, 1985. This meant that all stamps issued prior to this date were only worth one tenth at the time of mailing. The overall postage hence amounted to  5.04 oD =0.50 nD. plus the stamps in new Dong (21D) and the red free frank of 548D for 569.50nD.

Registered air mail letter sent in September of 1987 as a mixed currency franking from Ho Chi Minh City to Klewitz. The letter carries the other half of the perforated Space Flight set and souvenir-sheet plus stamps from the Prehistoric Animals (imperforate) and Year of Peace sets. Imperforate stamps and souvenir-sheets on postally used cover are very rare. The Prehistoric Animal were still denominated in old Dong while all other stamps were denominated in new Dong.  The Vietnamese Government conducted a devaluation of the Dong on September 14th, 1985. This meant that all stamps issued prior to this date were only worth one tenth at the time of mailing. The overall postage hence amounted to  16.5 oD =1.65 nD. plus the stamps in new Dong (23D) and the red free frank of 546D for 570.65 nD.

Air mail letter mailed in March of 1987 from Ho Chi Minh City to Klewitz. The letter carries half of the imperforate Space Flight and imperforate Poultry stamps plus perforated Labor Day stamps for an overall postage of  28D. Imperforate stamps on postally used cover are very rare.

Air mail letter mailed in March of 1987 from Ho Chi Minh City to Klewitz. The letter carries the other half of the imperforate Space Flight and imperforate Poultry stamps plus perforated Labor Day stamps for an overall postage of  25D. Imperforate stamps on postally used cover are very rare.

Registered air mail letter sent in November of 1987 from Ho Chi Minh City to Klewitz. The letter carries half of the perforated Insect set plus stamps from Water and Mountain Spirit, Manned Space Flight and Ape sets for an overall postage of 552D (including gore red free frank for 458D). Fragment of the green Fulda custom cachet on front.

Registered air mail letter sent in November of 1987 from Ho Chi Minh City to Klewitz. The letter carries the other half of the perforated Insect set and souvenir-sheet plus stamps from the Manned Space Flight and Ape sets for an overall postage of 552D (including the red free frank for 513D). Souvenir-Sheets on postally used cover are very rare. Fragment of the green Fulda custom cachet on front.

Air mail letter sent in November of 1987 from Quan 5 (Cholon) to Klewitz. The letter carries the entire imperforate National Minorities set plus stamps from the Butterflies and Mannes Space Flight sets for an overall postage of 165D. Imperforate stamps on postally used cover are very rare. 

Registered air mail letter sent in April of 1988 from Ho Chi Minh City to Klewitz. The letter carries the other half of the perforated Mushroom set plus stamps from the STOCKHOLMIA Birds (stamp from souvenir-sheet), Traditional Indigenous Clothing (Imperforate), Mannes Space Flight and Insect (imperforate) sets. Imperforate stamps and stamps from souvenir-sheets on postally used cover are very rare. The overall postage of the letter (including the red free frank for 1,363D) amounted to 1,553D. Green Fulda custom cachet on front.

Registered air mail letter sent in April of 1988 from Ho Chi Minh City to Klewitz. The letter carries perforated and imperforate stamps from the Mushroom set plus stamps from the Water and Mountain Spirit and Manned Space Flight sets for an overall postage of 1,579D (including the red free frank for 1,425D). Imperforate stamps on postally used cover are very rare. Green Fulda custom cachet on front.

Registered air mail letter sent in April of 1988 as a mixed currency franking from Ho Chi Minh City to Klewitz. The letter carries the perforated German Railway souvenir-sheet in both color variations plus stamps from the Elephant, Communist Party, Motorcycles, Postal Union, Paracel and Spratly Island, Cacti and Manned Space Flight (souvenir-sheet) sets. There is also the military free frank issued in 1981 that was not allowed for international postage but apparently was accepted by the postal clerk nevertheless. Imperforate stamps and souvenir-Sheets on postally used cover are very rare. The ARGENTINIA stamps  were still denominated in old Dong while the other stamps were already denominated in new Dong.  The Vietnamese Government conducted a devaluation of the Dong on September 14th, 1985. This meant that all stamps issued prior to October 13th were only worth one tenth at the time of mailing. The overall postage hence amounted to 2 oD = 0.2 nD. plus the stamps in new Dong (154 nD) plus the red free frank for 2,835 nD for 2,989.2 nD. Green Fulda custom cachet on front.

Registered air mail letter sent in May of 1991 from Ho Chi Minh City to Klewitz. The letter carries perforated and imperforate Air Ship stamps and the souvenir-sheet plus stamps from theInk Drawings Horses, Old Sail Ships, Manned Space Flight (souvenir-sheet) and Nguyen Binh Khiem sets for an overall postage of 11,710D (including the red free frank for 2,900D). Imperforate stamps and Souvenir-sheets on postally used cover are very rare. Green Fula custom cachet on the reverse.

Registered air mail letter sent in May of 1995 from Ho Chi Minh City to Klewitz. The letter carries the imperforate Bamboo Plant set plus stamps from the UPU souvenir-sheet  and Manned Space Flight set for an overall postage of 27,414D. Imperforate stamps and stamp from souvenir-sheets on postally used cover are very rare.

Registered air mail letter sent in June of 1995 from Ho Chi Minh City to Klewitz. The letter carries Lenin stamps plus  stamps from the Crocodile and Manned Space Flight sets (souvenir-sheet) sets for an overall postage of 31,400D (including the red free frank for 16,400D). Souvenir-sheets on postally used cover are very rare.

Registration Nr. 104040

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