Bisect stamp from Bulgaria 2 stotinki.

Your reflection I like it, but why cut any stamp from the covers? DVI have 4 øre cuts also without covers, Belgium have cuts, Faroe Island and probably a lot of other countrys, could be covers take up space , and the postmark as I see it at the cut @oleksandr-Germany shows is tiede to the stamp, but you never know.

Reflect.
If other countries have bisects, the Bulgaria's is genuine

That falls over, using that premise, every country in the world has a bisect.

So, what generates a bisect?
A country's post office somewhere, runs out of a certain value stamp,
the Postal regime of that country cannot supply stock, so gives permission to cut a double value postage stamp in half
to cover that reduced value.

1. It requires official approval, and generally speaking will be listed in Stamp Catalogues.  I see no such advice

2. That postal office needed 1 stotinka valued stamp, to mail a letter ?   Postage rates need to verify that.

3. 1 stotinka stamps were produced in 1885, 1886, 1889,  it would seem stock was in abundance
If they were indeed in short supply, why bisect, when it is easier to surcharge another value stamp?
(1 stotinka surcharge in 1889)

No, I don't buy it, It may be indeed genuine, but I shall happily wear egg on my face, should it be  proven 


 

I think the person who cut out the stamp did not understand and did not know the value of such stamps. Here are the photos from my album. I bought the album and photographed all the pages for better inspection on the computer.

For sure you should keep your bisect. I lean towards it’s being genuine but the value is greatly reduced since it was cut from the cover. Clipping off stamps from envelopes has been common probably from the beginning of stamp collecting.

Thank you friend! hdm1950 ! Yes, unfortunately, a lot has been spoiled, a lot has been lost, or not found, thanks to scissors))) One thing is good, although the stamp has been cut out, it alone in its denomination may exist and has been preserved even in this condition! When a stamp of any country exists in one or two copies, I think there may be a small value, but the price will not decrease even if it is cut out! For me, philately is not an income, but a very exciting hobby)

Quote
"This item was sold at the Corinphila auction in November 2021 for 1500,00 EURO (+ commission) Zürich."

Response
"Han van Meegeren sold $60 million worth of fake Vermeers to everyone from Hermann Göring to the government of the Netherlands."

Look, I get your'e excited, to find just one of a few stamp shards supposedly existing, perhaps the the only one in the world.
enjoy the feeling, I am not here to be a mood killer, just offering a healthy scepticism.

You won't sway me in my opinion, without scholarly debate and opinions from recognised philatelic expertisers
The online stamp market abounds with altered stamps and covers, with unsuspecting buyers sucked in to parting with their money

Anatomy of a fraud

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I also found certificates that the Bisect brand of Bulgaria is 50 stotinki, only three copies.

Excellent.   Nice research, well done.
Now all we have to do is find one for the 1 stotinka

I am excited to see, and witness the Expertising certificate, you receive from Germany, for your piece.

I am warming the bacon on the stove, to have with the egg on my face 

I checked in my copy of the Sofia Philatelic Association's Specialized Bulgaria Catalogue volume one (2019 edition) and there is no information regarding bisects on the 1886 2 stotinki value, so most likely this was a temporary measure done at a local level without official sanction from the Post Office authorities.



the variants listed are for mis-spelling of Bulgarska and for broken rosettes in the top right corner

Notes translated (using Google Translate)

* In use: 09/30/1901.
* 12-13 are printed with spelling errors: "ONE CENT" (12), instead of "ONE CENT" and "TWO CENTS"
(13), instead of "TWO CENTS".
* 12-20 were printed by four orders: from 4.IX.1882 (put into use on 4.XII.1882) - 3, 5, 10, 15, 25, 30 and 50 st.;
from 31.II.1884 - 3, 5, 10, 15 and 25 st.; from 8.II.1885 (put into use on 25.V.1885) - 1, 2, 5, 10, 15, 25, 30 and 50 cent.; from
23.V.1886 - 3, 5, 10, 15, 25, 30 and 50 cent.
* From this series begins the printing of the Bulgarian stamps of 5, 10 and 25 cents in colors established by
International Postal Union (green, red and blue).
* Of all values occur with darker or lighter shades. 12-13 are on thin paper, from 12-14 there are also on
thick, and from 14-20 - on very thin paper. Copies of very thin paper +100%.
* From 14 they are known with an inverted background and with an orange spot under the rear right paw of the lion, and from 15 - with the colors of 16,
pink and light pink.
* The watermark also occurs inverted 180°, mirrored, mirrored and inverted 180°. The brands with a larger portion of
watermark letter are rarer. +200% are rated.
* With the same plots 6-11.
* 16 and 18 with overprint, see 21, 23, 24 and 26.
There are counterfeits of all brands.