Hi Yannis,
Wow!!!
I agree with the others, indeed an example of a very rare form of Georgian sabre/pallasche. I have only ever seen and handled one of these about a decade ago.
These are illustrated and described somewhat in Astvatsaturjian (p.144; fig.232,234) as sabres with 'yubkoi' (=skirt) according to translated notes. It is suggested that the sharply forward angle hilt is to add force to a blow.
Apparantly the arms author E.von Lenz suggests this skirt is to protect the leather of the scabbard from rubbing against saddle and stirrup. Another author noted as an E.Denisov concurs and agrees concerning the 'parade weapon' status....as has been suggested by Rivkin in his post also.
In another reference to E.von Lenz, cited in Triikman & Jacobsen (Denmark, 1941) and noting his article "A Study of a Sabre" ("Zeitschrift fur Historische Waffenkunde, VI, p.180), the authors also illustrate these skirted sabres and that they are a 'special Mingrelian type'. Apparantly Mingrelia is a western region of Georgia.
It is interesting that the beak type pommel of these 'sabres' (although the blades seem invariably straight pallasche form), corresponds to those seen on early swords attributed to Huns c.500 AD ("Swords and Hilt Weapons" , ed. M.Coe, p.177). Possibly atavistic connection? for a dress type sword?
In notes it seems these are often considered 19th century with some possibility of origins as early as latter 18th century.
While these notes offer some general information, it would be interesting to hear more from those with Caucasian interests on the purposes of the 'skirt' on the scabbard and the dramatically angled hilt. It seems that even very early swords found in Caucasian regions have such angle on hilts, as well as early Tatar sabres.
A beautiful example Yannis!!
All the best,
Jim