Standardized sizes - perforations

[Rein]

As happens all over the world the printing houses started to minimize the number of sizes for stamps; line perforations got replaced by comb perforations as soon as the printing methods did allow. The production of a good perforation block got quite expensive as well. One block will now cost about 10.000 euro!

The Argentinean stamp sizes are not described in the catalogues, I will make a start here and eventually also give pictures to go with it.

Standard perforations since 1908 by the Casa de Moneda de la Nación:

A
C12 1/2: 13 1/2 16/14 typo (1908-), offset-litho (1916- ),
C13 1/2 17/14 typo (1908), offset-litho (1916- ),

B

a. C13 1/4 (1/4) 16/20 typo (1908-), offset (1916-)
b. C13 1/4 (1/4) 20/16 typo (1908-), offset (1916-)

C
C12 1/4: 12 3/4 24/18 offset (1928-1930)

The C perforation had been used only for 2 stamp issues; the base line indeed has 24 teeth, the sideways "needles" come up with 18 teeth:



the top tooth can be a little bit thicker:



Or quite a lot thicker!

[Rein]

The Bb perforation had been used quite frequently; the base line has 20 teeth, the sideways "needles" come up with 16 teeth:

The pins did occasionally [?] break off as can be seen splendidly!

[Rein]

For quite a long time this standardized size had been in use. There had been some revisions that went mostly unnoticed. I need the correct (official) sizes in mm to calculate the more or less exact perforation gauges...


D1 26.0x37.5 or 37.5x26.0mm
a C13 :13 1/4 (13.08:13.33) 17/25- offset-litho (1928-), photogravure on the Mailander (1939-)
b C13 1/4:13 (13.33:13.08) 25/16-, 25/17 offset-litho (1928-), photogravure on the Mailander (1939-1957)

D2 26.5x37.5mm or 37.5x26.5mm
a C13 1/2 :13 1/4 (13.58:13.33) 18/25b recess on the Giori (1955-? ), photogravure on the Mailander (1955-?), offset-litho (1955-1977)

D3 26.5x39.0mm or 39.0x26.5mm
a C13 1/2 :13 1/4 (13.58:13.33) 18/26 photogravure on the Goebel (1968-1994)l
b C13 1/2 : 13 1/4 (13.58:13.33) 16/18, 26/19 photogravure on the Mailander (1971?)

[Rein]

For the 1955 PyR II definitives a new perforation size was introduced that is for the recess-printed 50c and 3P; for the 2 stamps in photogravure the old perforations were still in use - 80c, 2p Eva Perón Foundation - a size that was still in use for the PyR I offset-litho printed stamps. All later, post 1955, issued stamps had the new, somewhat wider size. But with the exception of the 2p Echeverria!



The watermarks are in both cases orthogonal watermarks with a symmetrical paper wire and the direction of paper vertical. Another special thing about the paper is that the wire side is at the front of the stamps - so the watermark itself is at the gum side! We do NOT have the watermark Multiple Sun+RA here but the watermark Multiple Sun+AЯ so a completely different watermark...... You can see the indents of the rhomboids [granulado] quite well and they are at the front whereas we were used to see them at the back!

Dario A. Bardi had mentioned in his chapter on the national papers the use of a "transposed" watermark [filigrana traspuesta or FT] in use for the PyR I since 1957. It is a pity that he didn't use pictures at all as that would have made his important work a lot more accessible.

[Rein]

The Argentinean stamp sizes are not described in the catalogues, I will make a start here and eventually also give pictures to go with it.

Standard perforations since 1908 by the Casa de Moneda de la Nación:

A
C12 1/2: 13 1/2 16/14 typo (1908-), offset-litho (1916- ),
C13 1/2 17/14 typo (1908), offset-litho (1916- ),

B

a. C13 1/4 (1/4) 16/20 typo (1908-), offset (1916-)
b. C13 1/4 (1/4) 20/16 typo (1908-), offset (1916-)

C
C12 1/4: 12 3/4 24/18 offset (1928-1930)

The C perforation had been used only for 2 stamp issues; the base line indeed has 24 teeth, the sideways "needles" come up with 18 teeth:



the top tooth can be a little bit thicker:



Or quite a lot thicker!

It seems that the C perforation / size belongs to fiscal stamps:

[ernesto]

Rein! Don't you dare to deal with revenue stamps!
It is already quite diffcult to classify them. Dealing with papers and perforations will drive me crazy...

Seriously: as far as I know papers and perfs are an inexplorated area in revenue stamps, so if you want...

Ernesto

[Rein]

Ernesto,

I wouldn't dare to touch the local fiscals, but I suppose that the national ones might have been printed in the same printing works as the postage stamps! So it is obvious to have a look at the papers and perforations as the postage stamps occasionally seem to have been printed on fiscal paper.....

GOOGLE:

Ernesto,

No me atrevería a tocar los fiscales locales, pero supongo que los nacionales podrían haber sido impresos en la imprenta mismo que los sellos! Así que es obvio para echar un vistazo a los papeles y las perforaciones, como los sellos de correos de vez en cuando parecen haber sido impreso en papel fiscal .....

[zakur]

Very interesting post about the stamp sizes...
I will try to go on with it when i have some time for philately.

Realmente interesante post sobre los tamaños de las estampillas; voy a tratar de continuarlo un poco cuando tenga algo de tiempo para la filatelia.