Gradually Larger Sized "Dies" In Recess Prinitng?!?!?!

The paper tends to shrink against the grain in wet paper printings. For vertical grain wet paper, there is horizontal shrinkage and for horizontal grain wet paper, there is vertical shrinkage.

Thanks, Rein. - But still it is only "probably". There is no certainty. But I have to give up discussing the finer points when it comes to the narrow teeth pointing to the use of a comb-perforation.

If the smallest ones are probably sheet-fed on the Nadherny, then why do the two remaining examples only differ vertically, not horizontally?


Thanks, jogil. - I do not know whether the Goebel rotary press used dampened paper. The Nádherný flatbed press did.

Florian,

the sheet-fed Nadherny was in use for quite some "commemoratives"in the 1930-ies, but the 1935-1939 "Widoki" were printed on just ONE type of paper - from the PWPW paper mill - both for the sheet-fed [5, 10, 25, 20, 25, 30, 45, 50, 55gr, 1zl, 3zl] AND the reel-fed [Goebel] [the 25, 45, 50 and 55gr].

I have my doubts about that just one type of paper ... But that paper is indeed very different from the types of paper used for the Nadherny!

The 45, 50 and 55gr show 2 [two] sizes - 28.3x21.3 vs 28.5x22mm. Only the 25gr has an intermediate size!

The perforation is "grzebieniowa" [comb for the sheet-fed] and "ramkowa" [for the Goebel-printings]

pozdrawiam, Rein

Galeoptyx - Rein,

I need to make a few corrections in my posts where I said that the Czechoslovakian airmail stamps of the 1930s were printed on the Nádherný flatbed press. The fact is that the above-mentioned stamps were printed on a sheet-fed Hummel flatbed press and a Nádherný flatbed press was never used for printing Czechoslovakian stamps. I got confused about the name Nádherný that is of Czech origin and completely forgot about Hummel which I should have used instead.


Therefore this is the way to read the passage: ... (compare the Czechoslovakian airmail stamps of the 1930s in either narrow or wide formats printed on the antiquated Nádherný Hummel flat-bed press often on overdampened hand-fed sheets ... in https://goscf.com/t/48681&whichpage=6#429323

The same goes for the same passage as quoted by Galeoptyx in
https://goscf.com/t/48681&whichpage=6#429482

In https://goscf.com/t/48681&whichpage=6#429713 the passage ... (I read the Poles had been using the same Nádherný flat plate press for earlier issues as the Czechs used for theirs) .... should be deleted.

I am very sorry. I do apologize.

Florián

http://index.csphilately.org/1984_06_Sep.pdf

Galeoptyx - Rein,

I have to say again that I am sorry. I based my data on articles published in Czech philatelic periodicals but having done some Googling I find that the Nádherný flatbed press is cited as used for the printing of the 1923 Jubilee set in http://www.tomfijala.cz/csrI1918-19...uv/main2.htm (click on Poznámka = note to any of the values) and in 1939 "a new Nádherný machine" is mentioned as used for printing some more 50h, 2Kè and 4Kè values of the 1930 airmail stamps in http://www.tomfijala.cz/csrI1918-19...930/PL07.htm while you point out the same for the 1939 30h value.

I do apologize.

As for the 50h value ( http://www.cpslib.org/aip/1930-L7.htm ) my copy of "Specializovaný katalog èeskoslovenských známek 1978" mentions 3 different formats: the first two for Type I printed on the Hummel, the third for Type II printed - as I now learn - on the Nádherný. The 1Kè value ( http://www.cpslib.org/aip/1930-L8.htm ) has 2 formats (both printed on the Hummel), one of which is different from the 50h value ones.

These are the sizes of the printed area of the 50h value:

Type I printed on the Hummel:
17,7 mm X 21 mm (wide format)
17,2 mm X 21,2 mm (narrow format)

Type II printed on the Nádherný:
18 mm X 21,5 mm


These are the sizes of the printed area of the 1Kè value printed on the Hummel:

17,7 mm X 21 mm (wide format)
17,5 mm X 21,7 mm (narrow format)

Florian,

this means wet-printing on the Hummel with TWO different directions of the paper grain [bothe 50h and the 1K]; and probably dry printing and ONE direction of paper for the Nádherný [wet printing would have given some variation in size!

pozdrawiam, Rein