5 Öre 1873/03 - Green Lines And Smudging .

Thanks HB,
That's quite a crack of Siegels.

I'd be certainly, showing the OP's example to colleagues for appraisal.

Hy-brasil,
Thank you for ,providing the catalog number reference. Of course I can't say wath did it's previous owners do with the stamp before it came in collection. I looked the lines under magnify glass again and they appeared to be at the same level as the design lines of the design. I also observed this similar smudging on the marginal side, at other Swedish stamps ,from the same issue.
I may be wrong buy when they are compare with the image of the cracks at lower right corner you've posted they look alike very much.

Rob Roy ,
I accept your remark about the year of issue of the stamp . The correct one is 1891/03.

Rod,
I'm not a specifialist at Swedish stamps. I appreciate every post on my question. I'm just trying to collect as much as possible opinions on the stamp. I couldn't tell how many of these stamps have survived to our days. If it truly has this type of inking
error it should be very hard to find such stamp .

Maybe it will help to narrow down what production method was used then and whether there were known issues of plate problems.

Agree.
with the old chestnut "Philately begins, where the catalogue ends"
I would be showing that stamp to Swedish bloggers, dealers, whatever
I'd really like to know.
I like to put queries "to bed" having an open ended query not really solved,
is like a bad itch.
This is where stamp clubs can be so helpful.

What we have not seen, is an image of the back of the stamp.

Not a Swedish specialist by any means, but I do believe these are what are referred to in the Facit catalog as plate cracks. There is a small picture in the Facit showing an example, but the cracks are much more "flamboyant".
Here are 2 examples from my own collection.

The first is also a 5ore example, but cracks in slightly different spots.


The next is a 20ore from the same set. Cracks can be seen in lower corners of the design.


side note: I just noticed a small bit of paper adhesion on my 20ore. Missed it when soaking. Getting old sucks.

Great scans, very convincing, I am changing my opinion.
Thanks.
Any evidence on back of stamp?



Depends on your view, I see it as getting closer to rebirth.

Comparing the lower lines of both stamps, the lower stamp seems to have a cruder bottom line. Can it be that the crack there runs from side to side and not just in the corners (practicing crack identification)?

In OP's pictures, you can see the running of the ink within the top left frame, outside the frame, in the 'S' of Sverige, and along the ink flow. That does not coincide with these being plate cracks. Whether it was soaking, manipulation, or happened during printing, I do not know.

Plate crack shown as a white line (different series of stamps)
How can a cracked plate show across selvedge without inking

274483385471

SWEDEN #170v (179Av) 20ore Gustaf Coil Pair, CRACKED PLATE variety affecting both stamps, og, NH, VF, Facit $190.00

That is not a plate crack. The line is much too smooth. It looks more like a scratch.