The unknown 12p Quebracho

[Rein]

It hardly ever occurs that we can prove that a plate flaw is not a plate flaw!!!

In the steps before we have a ready cylinder we have the phase that all images are gathered on a diapositive film! When somehow a scratch gets on that film we will normally never find out that this happened on the film and not on the cylinder!

Thanks to the fact that the 12p exists with TWO different screens - a coarse one with 80 lines/cm and a fine one with 100 lines/cm we are lucky to see this:



Three (3) times with a fine screen:







Coarse screen:



to be continued ...

[Rein]

Dario Bardi distinguished the following types of paper:



The FT is not really a type of paper but the result of misled sheets BEFORE gummng. The c/fil Raya vert. is something that is supposed to occur several times across the width of a paper reel and is NOT a type of paper in itself just as a plate flaw is not a type of stamp itself... The invisible is too easy a cop-out as for most collectors watermarks as such are hardly visible ...

What is left is the following:

for photogravure

ZA 2 m with a variation in thickness
ZA 4 M
ZA 5 M

for offset-litho

ZA 2 m
ZA 4 M

in my offset-litho stamps the two directions of paper occur almost equally often with a slight predominance for the vertical direction of paper [m]. To call one Blanco and the other not is also exaggerating!

to be continued ...

[Rein]

So far I have seen and studied almost 1500 photogravure 12p stamps!

The distribution in rough numbers:

- circa 1000 copies - Zárate uncoated, vertical direction of paper, coarse screen [D.A. Bardi - ZA 2 - 0.10]
- circa 300 copies - Zárate uncoated, horizontal direction of paper, coarse screen [D.A. Bardi - ZA 5 - 0.30]
- circa 200 copies - Zárate uncoated, vertical direction of paper, fine screen [D.A. Bardi - ZA 2 - 0.10]

and

- 1 (one) copy - Zárate uncoated, horizontal direction of paper, fine screen [D.A. Bardi - ZA 4 - 1.00]

The assigned price for the ZA 4 must be much, much too low....

to be continued ...

[Otin]

Rein,
You have done quite an investigation on the 12pesos stamp and it should be taken seriously by specialists!!! The existence of a fine screen and a coarse one was unknown to me, And I also must confess it´s the first time i see the paper with those paralell lines.
The raya vertical wmk was provoked by strings they added along the endless wires to stop and/or avoid splits in the forming paper. A best explanation exists and was done by an enginnier thta went to Zárate plant to see the origin of that "raya vertical"
Congratulations.
José

[Otin]

Rein,
You have done quite an investigation on the 12pesos stamp and it should be taken seriously by specialists!!! The existence of a fine screen and a coarse one was unknown to me, And I also must confess it´s the first time i see the paper with those paralell lines.
The raya vertical wmk was provoked by strings they added along the endless wires to stop and/or avoid splits in the forming paper. A best explanation exists and was done by an enginnier thta went to Zárate plant to see the origin of that "raya vertical"
Congratulations.
José

[leonardoleidi]

Congratulations Rein.

[Rein]

Sometimes scratches may look like damages to you! But be careful as they may be true gems as plate flaws!!


















The tree has a characteristic of his own!

Is there any restriction as to how long a plate flaw is allowed to be

to be continued ...

[Rein]

Sometimes scratches may look like damages to you! But be careful as they may be true gems as plate flaws!!

















Is there any restriction as to how long a plate flaw is allowed to be

to be continued ...

[Rein]

In offset-litho we often meet "spanjolen" when a dirt particle gets into the gummi cyilnder, makes a nice aura around itself and transfers the ink onto the paper!





And really the sun gets shining through the tree leaves!

to be continued ...

[Rein]

Alas, not everything that looks like a Spanjool is really one!!!













At the right side of our UFO a lot more has happened!!!

to be continued ...

[Rein]

The 12p with the fine screen does exist also with the Zárate paper and orthogonal watermark, direction of paper horizontal and a symmetrical wire structure:









In a mess/mass of some 3.000 12p stamps, only 2 copies of this one I have found!!

to be continued ...

rc5000

[ntrm]

No voy a abrir un post nuevo, pero queria agradecer a Rein los 5000 posts!!
Mil veces puteamos porque parecen indecifrables, pero a medida que uno va aprendiendo van apareciendo las cosas que quiere mostrarnos...

Si habrè entrado a Alo Alo diciendo: ALGUIEN ME EXPLICA LAS RAYITAS DE REIN??? JAJAJAJ

Bueno.. nada mas...

Martin

[Rein]

No voy a abrir un post nuevo, pero queria agradecer a Rein los 5000 posts!!
Mil veces puteamos porque parecen indecifrables, pero a medida que uno va aprendiendo van apareciendo las cosas que quiere mostrarnos...

Si habrè entrado a Alo Alo diciendo: ALGUIEN ME EXPLICA LAS RAYITAS DE REIN??? JAJAJAJ

Bueno.. nada mas...

Martin

Thanks! Martin!

I hope to find enough interesting Argentina stamps to give me the inspiration to write a few thousand posts more!

saludos, Rein