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I have mentioned it before, in the period before 1938 only ONE type of paper wire had been used for paper manufacturing = a symmetrical wire AKA linen-binding:
when you connect the cross-overs by a blue line you wil get this:
Around 1938 the paper industry started to use different wires with a twill-binding:
when you connect the cross-overs by a blue line you will get this:
The purples lines represent diagonals our eyes are less likely to see, but still! In the linen-binding the diagonals are symmetrical and are equidistant - the next parallel blue line is just as far way in the case of the ascending lines as of the descending lines. In the twill-binding, however, the ascending blue lines are nearer to each other! I hope this will make it clear why I refer to the linen-binding as symmetrical and to the twill-binding as asymmetrical. It is not just the angles of the blue lines but also the density! Quite common was the 28/18 lines per cm horizontally/vertically! But occasionally other densities can be found although not so common. The most often met other version is the 24/22 density which is called "Tela" in Argentina and originated from the Wiggins Teape paper mill in the UK! Outside Argentina Tela can be found for UK and most British Commonwealth countries in the 1939-1950 period. Even in Australia and NEW Zealand. Apart from the Argentina collectors ONLY the NZ collectors have been aware of this type of paper! |
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The first type of paper with a symmetrical paper wire!
you can see the "rhombs" even at the front! |
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The second type of paper with a Asymmetrical paper wire!
The "striped" lines I indicated by "red" is called "rayado" in Argentina The year "1939" is a nice documentation of the fact that this type of paper wire was introduced around 1938!! |
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Another example of the second type of paper with a Asymmetrical paper wire!
The third type of paper is the mirrored [around the vertical axis] version of this! |
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The fourth type of paper is a symmetrical paper wire again with the 24/20 density - called Tela!
The G40 is the turning point here for the asymmetrical into the Tela! |
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The fourth type of paper is a symmetrical paper wire with the 24/20 density - called Tela! Now with the fade colours!
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The Tela did continue till the end of WWII and after that!!!
to be continued ...[/quote] [quote="Rein"]The second and third type - asymmetrical - are mirrored!
Is the "b" version with the less steep diagonal from top left to bottom right; the "d" version from bottom left to top right!
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The "b" version with the less steep diagonal from top left to bottom right:
The "d" version from bottom left to top right!
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Still using "Tela":
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And still using "Tela":
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The 1840-1940 Stamp Centennial:
The asymmetrical "d" version! |
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The 1840-1940 Stamp Centennial:
The asymmetrical "b" version! |
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The 1840-1940 Stamp Centennial:
The symmetrical "Tela" version! |
