#C64c – 1962 8c Plane & Capitol,bklt pane 5+labl

 
U.S. #C64a
1962 8¢ Airliner and Capitol Dome

Issue Date: August 1, 1963
City: Dayton, Ohio
Printed By: Bureau of Engraving and Printing
Color: Carmine, tagged
 
This stamp was issued to conform to the new postal rates, which became effective on January 7, 1963. A field test was done with luminescent-tagged stamps. This was the first trial of tagged stamps. The special ink that glows under ultraviolet light was applied to the stamps in the test group to see if it would speed up mail handling. They were only issued at Dayton, Ohio, but they were put on sale to collectors.
 
The dome of the Capitol building pictured on this stamp is the second dome. As the country grew, the congress did too and outgrew their building. When it was expanded, a new, larger dome replaced the first.
 

First Phosphorescent U.S. Stamps 

 On August 1, 1963, the U.S. Post Office experimented with luminescent stamps for the first time, in an effort to speed up mail sorting and cancellation.

By the late 1950s, mail volume in the U.S. and around the world was constantly increasing. Many countries began to explore new ways to sort and postmark their stamps in quicker and more efficient ways.

Working with private sector companies such as Pitney Bowes, the U.S. Post Office worked to develop machinery that could find the stamp and flip the envelope (a process known as “facing”) so the postmark would be placed in the right spot. In order to do this, the stamps needed to be able to be “seen” by the machine.

Soon planners discovered their answer – luminescence. This is a process in which stamps received an invisible coating that could only be seen under ultraviolet (UV) light. Under this light, the stamps would glow.

The Post Office then needed to test their new idea, and selected U.S. #C64 as the first stamp to implement this experiment. The stamp was issued on August 1, 1963, in Dayton, Ohio. The Post Office sent their special machinery there and overprinted the stamps with a special compound called a “taggant.” Invisible to the naked eye, the taggant made the stamps glow pinkish orange under the UV light. The experiment was a success – the machine acknowledged the glow, flipped the letters, and applied the cancels in quick order.

The Post Office conducted more tests and eventually adopted this “tagging” on a larger scale. After mid-1964, all airmail stamps were tagged. And after 1991, all definitive and commemorative U.S. stamps were tagged, except pre-cancels and those under 8¢ face value. Tagged low-value stamps can trigger the facer-canceler, which can’t read face value and reject mail if postage is insufficient.

Older tagged stamps will have a reddish glow, while more modern ones will have a greenish glow. And in recent years, the U.S.P.S. has gotten creative with its tagging, making certain elements of a stamp glow, rather than the entire stamp.

Did you know…

that a stamp missing its phosphorescent tagging is considered by many to be similar to a missing color error? Mystic has a large selection of these neat “tagging omitted” stamps you can browse and order here. Many are affordably priced under $10, and all are half their Scott Catalogue values!

 

 
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U.S. #C64a
1962 8¢ Airliner and Capitol Dome

Issue Date: August 1, 1963
City: Dayton, Ohio
Printed By: Bureau of Engraving and Printing
Color: Carmine, tagged
 
This stamp was issued to conform to the new postal rates, which became effective on January 7, 1963. A field test was done with luminescent-tagged stamps. This was the first trial of tagged stamps. The special ink that glows under ultraviolet light was applied to the stamps in the test group to see if it would speed up mail handling. They were only issued at Dayton, Ohio, but they were put on sale to collectors.
 
The dome of the Capitol building pictured on this stamp is the second dome. As the country grew, the congress did too and outgrew their building. When it was expanded, a new, larger dome replaced the first.
 

First Phosphorescent U.S. Stamps 

 On August 1, 1963, the U.S. Post Office experimented with luminescent stamps for the first time, in an effort to speed up mail sorting and cancellation.

By the late 1950s, mail volume in the U.S. and around the world was constantly increasing. Many countries began to explore new ways to sort and postmark their stamps in quicker and more efficient ways.

Working with private sector companies such as Pitney Bowes, the U.S. Post Office worked to develop machinery that could find the stamp and flip the envelope (a process known as “facing”) so the postmark would be placed in the right spot. In order to do this, the stamps needed to be able to be “seen” by the machine.

Soon planners discovered their answer – luminescence. This is a process in which stamps received an invisible coating that could only be seen under ultraviolet (UV) light. Under this light, the stamps would glow.

The Post Office then needed to test their new idea, and selected U.S. #C64 as the first stamp to implement this experiment. The stamp was issued on August 1, 1963, in Dayton, Ohio. The Post Office sent their special machinery there and overprinted the stamps with a special compound called a “taggant.” Invisible to the naked eye, the taggant made the stamps glow pinkish orange under the UV light. The experiment was a success – the machine acknowledged the glow, flipped the letters, and applied the cancels in quick order.

The Post Office conducted more tests and eventually adopted this “tagging” on a larger scale. After mid-1964, all airmail stamps were tagged. And after 1991, all definitive and commemorative U.S. stamps were tagged, except pre-cancels and those under 8¢ face value. Tagged low-value stamps can trigger the facer-canceler, which can’t read face value and reject mail if postage is insufficient.

Older tagged stamps will have a reddish glow, while more modern ones will have a greenish glow. And in recent years, the U.S.P.S. has gotten creative with its tagging, making certain elements of a stamp glow, rather than the entire stamp.

Did you know…

that a stamp missing its phosphorescent tagging is considered by many to be similar to a missing color error? Mystic has a large selection of these neat “tagging omitted” stamps you can browse and order here. Many are affordably priced under $10, and all are half their Scott Catalogue values!