Spain, King Alphonso Xiii

I present 2 stamps from Spain:
-Scott 338 (Die I) with a dirty print and set off.
-Scott 342 with shiffted perforation
In specialized catalogues are they mentioned as varieties?

Partial setoff seems pretty common for the 25c value - I have 3 mint copies, and all have some set off.

That set is known for often being badly centred, in my experience it is less common to find ones with good centring. I doubt they would be regarded as varieties by Edifil.

Here's one of mine with even worse centring.

My example
(Scanned possibly in 1999 when I was learning to scan )

Two more

Thank you all.
The bad centering I also noticed on the stamps of this series.
The existence on a stamp of 2 parts of the designs side by side is considered a variety for other countries.
rod222-very nice your stamp with double displacement, which is also big enough.
I notice the same dirty printing on your stamp.
It seems that on the 25c stamp (as gmot wrote) the ink has a drying problem.

While Edifil does mention a number of perforation varieties for this series, this sort of "shifted" perforation is not (not sure of its technical term). Agree that the quality control on these issues was quite poor.

Hi RK
Even the perforations are poorly executed.
I managed to measure them:
10c and 25c have K13x12.5
40c and 1P have K13x13.
Are they normal perforations or are they variety?

This type of variety occurs when sheets are not aligned correctly when perforated. Philatelists, usually, call this bad centring. The clue is in "bad."
However, if the centring is far off, parts of the design of an adjoining stamp show up and philatelists start to consider them interesting varieties. OP's example shows the inscription at top, instead of at bottom. That is an interesting variety.

Few catalogues list such varieties. The price depends on whether this is just bad centring or a variety to philatelists. Technically, the issue us bad alignment in both cases.
How do you list these? In steps of 1mm shifts. Or just the one you are interested in, or at least 25%, or 40% of the stamp height (or width). In the latter case, OP's example would not be listed. There is no end to the list you could draft, and thus often out of scope of the catalogue.

These are known as the Vaquers, named for their engraver, Enrique Vaquer. Edifil lists 13x12.75 as the default but also notes 12.25x11.25, 12.25x11.5, 12.25x11.75, 11.25x11.25, and 6.5x6.5. Edifil additionally includes a listing for perforations that are so severely displaced either vertically or horizontally that they essentially split the design in half. I am quite sure there is also a secondary literature which goes beyond Edifil as there are definitely collectors who specialize in these.

Hi RK
Thanks for the information.
I rounded up and down the perforation when in fact 12.75 was the correct one.

Hi NSK
I want to have in my collection a perfect stamp out of the millions of such stamps issued, but also a variaty stamp out of the hundreds or less.
This type of variety is found in the Fiume Sassone catalogue, the name is "a cavallo" (I think the French also have "a cheval").
I have a stamp with this variety (Segnatasse "a cavallo") confirmed by the expert Ivan Martinas.
Note that the upward displacement is very small, but do not exclude that other countries accept a minimum displacement of 20-30%. or not at all

As I wrote: "few catalogues" list them.
Stanley Gibbons does not even list such errors in their specialised catalogues. But they do sell them.
They can be collectible, certainly when they shift the design, not when they only shift in the margin.
Your Spanish example has the engraver's name at top, instead of at the bottom. That tends to be very collectible.

The Italian example you show is not a misalignment of perforation, but of the overprint. The stamp is almost perfectly centred.

The text in the catalogue states "overprint strongly shifted upward." I am not sure whether what you show is "strongly" as in the catalogue. The last word is not readable. I cannot make out how "Segnatasse" must appear for that description.

Another overprint (normal) I think you now notice the upward shift.
The term "a cavallo" I think means that part of the overprint is printed on the adjoining stamp.

@Cupram,

I did see the shift. It is a misplaced overprint. It has nothing to do with misperforation.

In fact, your last example appears slightly low; another (minor) misplaced overprint. Basically, by showing so many examples, you are also showing how common the misplaced overprints are.
The catalogue lists a "major" upward shift.

In your scan of the catalogue, a word after "<<Segnatasse>> <<a" is unreadable. I cannot ascertain from your scans whether the catalogue would consider the top of "Segnatasse" shifted to the adjoining stamp as "major" or that the listing is for a shift of the full word. Maybe this is the major shift for this stamp. I cannot tell.

Overprints, usually, are applied after printing and perforating. Misplaced overprints are a completely different category and tend to attract more interest than badly centred perforations. If this would be a British stamp - that is my collecting interest -, your first misplaced would be highly collectable, command a premium, but absolutely no "major" shift. That would have required the word to have shifted to the adjoining stamp and not just have sheared off the top.

Having said that, you have a perfectly centred perforation with a very nice misplacement of the overprint. If that would be Bahrain, Qatar, MEF, etc. on a British one, I would certainly love one in my collections. So, yes, it is a great variety.

The Sassone specialized catalogue lists overprint varieties of all sorts at great length, so presumably that means they are of great interest to Italian & area philatelists. I find them very interesting and collectible myself.

"A cavallo" literally means "on horseback" - to put it another way, "mounted up high". Whether this Fiume example qualifies in the eyes of the Sassone catalogue I wouldn't know - but certainly I'd take Ivan Martinas' word on Fiume stamps.

~Greg

@NSK,
Minor or major are approximate terms and I shy away from using them.
In the Fiume-Sassone catalogue there are 3 types of varieties which seem to me very clear (I don't know Italian and the catalogue pages are taken like that)
Variety 20m -Segnatasse in the upper teeth area.
Variety 20 mb -One part of Segnatasse in the upper area and the other part in the lower area of the stamp (the term is "Segnatasse a cavallo")
Variety 20n-Segnatasse in the lower part of the stamp.(Segnatasso a basso)