Hi Detlef, and thanks for your consideration, and the interest you show to Algerian crafts.
Yep, I think, with all consideration for my modest knowledge, that these are all algerian crafts, and not only algerian, but from Bou-saada, or may be inspired by the art of this region.
- For the first one, without hole (the last pictures), it belong to those big Bou-saadi (some calls the big ones "khodmi" and small ones "mouss", but in fact the two words means "knife"). I have recently seen one like this, without any hole, and it was a Bou-saadi (I will send you pictures privately because it's actually on sell). Even if there is no hole, you can notice that the two pins are, like others, before the middle of the handle (not a full tang on those knives).
- Is there any bevel on the second half part of the sword? On the back? Because this is another "signature" of some bou-saadi knives.
- Another significativ detail, is the scabbard. Bou-saadi Khodmi have traditionnaly those wooden scabbard, covered with leather, that is usually marked with some geometric design (cant see them). That thicker part, is another stripe of leather that is tired under the other, to keep it in place and make a loop for attachement.
(you can rarely find some scabbard covered with soft metal like brass, and engraved like for some rare flissa, in the ottoman style).
- Then, we can notice that line above the edge, that is probably due to the forging process describe before.
- For the two others, my opinion is the same. Also Bou-saadi khodmi. That visible hole is significativ. The two pins are before it, that prooves that the tang stop before the hole (if it is a third pin, after the hole, i have seen that before, like in one of my pictures, it is probably to keep the handle more "solid", if it is made from two different parts).
The swords are also typically algerian. You can notice that line of forging, and the two others fuller are also common on the big models, obviously to make it less heavy.
PS.. you really have amazing models there... not usual, and probably old. The most we can find in europe, were taken by military frenchmen during the colonisation of algeria. But the most are not in a good condition, due to the use (war... stabbing.. etc...). Those two ones were probably belong to a chief (caid) or someone like that. I'll make a trip to bou-saada soon I hope, I'll take more information, and probably take you a recent craft
Peace, Khaled.