Unified Vietnam, 40 Years United Nations, January 6th, Michel Nr. 1656; A single stamp with a 1D nominal was issued in perforation 10.75. The stamp was subject to a large color variations.

Here is the stamp in  blue base color and right hand colors of ochre, brown and purple-brown.

Here is the stamp in a light-blue base color and right hand colors of ochre, brown and purple-brown

The variation of the right hand color was a function of the printing process and not the color mixture as can be seen from these two strips of five on which the color of the right hand becomes progressively darker towards the right. 

These stamps were not officially released imperforate, however some imperforate trial proofs and phase prints have come to market.

Imperforate phase print in block of four of the blue color.

Imperforate phase print in block of four of the yellow-olive color.

Imperforate phase print in block of four of the blue  and yellow colors.

Imperforate phase print in block of ten of the blue, yellow and olive-green colors (upside down phase print of the violet and black colors on the reverse).

Front

Reverse

Imperforate phase print in block of four of the violet and black  color.

Imperforate phase print in pair of the yellow, brown and black colors.

Finished  design of the stamp imperforate in block of four

The following images are from a complete sheet of 100 stamps.

Plate error of very weak print of the country name (Fields 1-3)

Detailed scan of the affected area

Double printing of the black color and plate error “ring on middle finger” (Field 15)

Detailed scan of the affected area.

Plate error of “bubble above QUOC” (Field 16)

Detailed scan of the affected area

Plate error of “Inscription on the right faulty” (Field 26) and double printing of the black color

Detailed scans of the affected areas

Plate error of “coffee bean above right hand” (Field 45)

Detailed scan of the affected area

Plate error of “white circle between BINH and HOU” (Field 51)

Detailed scan of the affected area

Plate error of “black dot to the right of the right hand” (Field 86)

Detailed scan of the affected area

Plate error of “wart on hand”

Detailed scan of the affected area

Plate error of faulty blue printing run (Field 97)

Detailed scan of the affected area

Mint pair on which the right stamp shows the plate error “faulty top inscription” (Field 60)

Detailed scan of the affected area

Mint block of four with the top left stamp showing a partial failure of the blue printing run.

Detailed scan of the affected area

Registered air mail letter sent as a mixed currency franking from Ho Chi Minh City to Klewitz in September of 1986. The letter carries the United Nation stamp in different color variations and stamps from the Reconstruction, Traditional Houses and Halley sets that were already denominated in new Dong. The stamps from the Mushroom set were still in old 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  14 oD =1.40 nD. plus the stamps in new Dong (32D) for 33.4 nD. Fragment of green Fulda custom cachet on front.

Registered air mail letter sent as a mixed currency franking from Ho Chi Minh City to Klewitz in October of 1986. The letter carries the United Nation stamp in different color variations and stamps from the Traditional Houses and Halley sets that were already denominated in new Dong. The stamps from the Dien Bien Phu set were still in old Dong. There are also two of the military free frank issued in 1984 that was not valid for international postage but apparently got accepted by the postal clerk nevertheless. 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  8.5 oD =0.85 nD. plus the stamps in new Dong (23D) plus the red free frank for 6D for 29.85 nD. Fragment of green Fulda custom cachet on front.

Registered air mail letter sent as a mixed currency franking from Ho Chi Minh City to Klewitz in October of 1986. The letter carries the United Nation stamp in different color variations and stamps from the Reconstruction, Traditional Houses, Dam Building and Halley sets that were already denominated in new Dong. The stamps from the Lotus set were still in old Dong. The Lotus stamps are in the rare post master perforation that is very hard to find on postally used cover. 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  0.48 oD =0.05 nD. plus the stamps in new Dong (33D) for 33.05 nD. Fragment of green Fulda custom cachet on front.

Registered air mail letter sent from Ho Chi Minh City to Klewitz in December of 1986. The letter carries the United Nation stamp in different color variations and stamps from the Reconstruction, Traditional Houses, Dam Building and Vietnamese Post sets for an overall postage of 182 Dong (including the red free frank for 115D). Fragment of green Fulda custom cachet on front.

Registered air mail letter sent as a mixed currency franking from Ho Chi Minh City to Klewitz in January of 1987. The letter carries the United Nation stamp in different color variations and stamps from the Thaelmann, Red Cross, Traditional Houses and Bronzes sets that were already denominated in new Dong. The stamp from the Ho Chi Minh Birthday set were still in old 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 (38D) plus the red free frank for 185D for 223.4 nD. Fragment of green Fulda custom cachet on front.

Local letter mailed inside Ho Chi Minh City in February of 1987. The letter carries the United Nation stamps in different color tones plus a pair of trial proofs that are missing the yellow and blue printing run. Trial proofs on postally used cover are basically unheard of. Extremely rare. 

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 May of 1989 as a mixed currency franking from Ho Chi Minh City to Klewitz. The letter carries perforated stamps from theINDIA Stamp Exhibition set plus stamps from the Five Year Plan (mis-perforated), Sea Snails and Dong Da sets. Error stamps on postally used cover are very rare. The Five Year Plan  stamps  were still denominated in old Dong while 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 0.48 oD =  0.05 nD. plus the stamps in new Dong (2,281 nD) plus the two red free franks for 6,240 nD for 8,521.05 nD. Green Fulda custom cachet on front.

Registration Nr. 103990

Registration No. 103390

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