Riveting the tang on the pommel on original swords

Flattening the end of tang on pommel (hot riveting/ hammering). What does it look like on the original swords?

This is an interesting detail which, while being the most important moment of putting the sword together, is also a very small step that ensures the integrity of the entire structure.
This is also a detail that we rarely pay attention to in museums or catalogues, it is simply not clearly visible and small.

How was it done?
The tip of the tang was heated and hammered until it was minimally flattened (mushroom shape), which held the head like a rivet. Such fine riveting fulfilled its function perfectly. You can also do it cold, without heating the steel, which is more time-consuming, but it also works. We recognize the 'cold' method by the way the steel spreads and how deep it is deformed by the hammer. It looks different when hot (soft steel) and when cold (hard steel).

Aesthetics
Of course, in the Middle Ages, in the period I am interested in (950-1450), not much attention was paid to the aesthetics of this construction detail, sometimes it was even made completely sloppily, crookedly, and sometimes a bit more neatly. But what was always more important than aesthetics was the functionality and structural integrity of the entire sword. Today, 'new' swords are often viewed almost with a microscope and all minor imperfections are considered to be of poor quality. Having imitated the medieval style for years, I have encountered this objection many times, from people who rarely deal with original swords. Personally, I believe that the more we learn about old original swords, the more we understand their style and aesthetics. It seems that what they considered primarily a weapon, we today often see as a work of art, without the context of practical use. This makes sense, but the question arises: where should 'historical reconstruction' go and what is it about?
In my humble opinion, historical reconstruction is not about doing things 'better' (in every respect) than those we are reconstructing. There is a big misunderstanding in this area, which I have written about many times.
Finally, I even heard such an absurd accusation that 'these makers who refer to the original swords, in this way, only explain their clumsiness and lack of skill'. Ah, ok.
Well, I've never heard anything more illogical in my life...

So let's see what they really look like...