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  • 7 messages
  • January 01, 2014 14:49
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January 01, 2014 14:49

Can someone explain the difference to me? It concerns the Swiss series 189 191 Michel. The flugpostmarks.

Thank you Jan

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  • 150 messages
  • January 01, 2014 21:10
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January 01, 2014 21:10

Hello Jan,

In Dutch that is coated paper, I suspect.

And then this information might help you:

http://www.paperpraat.nl/wijsboek/gestreken-paper

MVG
Cor

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  • 332 messages
  • January 03, 2014 13:49
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January 03, 2014 13:49

Jan,

paper without a layer on top was the most common type of paper for a long time. With a layer of kaolin or something similar, the quality of the printing could be greatly improved and it was referred to as art paper.

This quality aspect also played a role with stamps, however, in addition, the postal service had an interest in ensuring that stamps were not reused after use. used for postage.

By providing the paper with a layer - often arabic gum - before the paper was printed, as smart guys [in NOI often the Chinese!] tried to wash away the stamps also the stamp image disappear with it! Bingo! These washable seals have long been the solution to a problem.

Another way was to let the stamp penetrate deeper into the stamps !!

In short, there were various motives for providing the paper of stamps with a layer [coating]. ..

In Switzerland, the quality requirements only played a role for the special issues. This was not an issue for the long-running stamps [first in letterpress later in plate printing]. The seals are uncoated until a certain point, but they did suffer from curling sheets and to counter this, the gum was broken with a special gum refraction pattern immediately after application! This Gummiriffelung usually remains visible after the gum has soaked because the pattern has penetrated very deep into the paper.

In 1940, for some stamps in letterpress - at that time stamps in plate printing were actually already the standard for long-grain - paper was used without Gummiriffelung but with a coating. So the have NO gum break and look shinier than the stamps of about 20 years before. Was it a batch of paper to be used for special issues ????

Greetings, Rein

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