[Jim McDougall]

Addendum:
Forgot to note another feature which I overlooked, at the juncture of the crossguard and langet is the 'Maltese Cross' which is actually the heraldic 'cross pattee' in what is termed wedge form. This device was extremely popular in Poland-Lithuania as a symbol of nobility, and of course is accordingly associated with knighthood. This cross often is seen on the armour and pennons on lances of the famed 'Winged Hussars' and seems well placed on a sabre of this period.
Returning to the interesting cartouche, at a glance there is tempting (if not tenuous) resemblance to a winged figure, which while potentially suggesting the winged hussars, may also be a pictogram signifying the Turkish 'deli', light cavalry who may have influenced the winged theme of the Polish hussars.
This would again address the possibility of this blade being Turkish, which does not seem likely at this point however.

Most blades on these sabres were apparantly produced in Poland or Hungary according to Zygulski, but it is noted that many came from Styria or Genoa. If this were either Styrian or North Italian ( all blades Italian were not necessarily from Genoa, though termed so as this was primary port of departure) one would expect to see the distinctive 'sickle marks' which are paired, dentated semi circles with triple dots at each terminal.

Though the scans added are poor in quality, they might present an idea of the type of hilt grip and backstrap likely were present. The metal would most likely have been iron, the wood grip wrapped with black leather. With mounts and scabbard covered in black leather these were often colloquially termed 'black sabres' . Better illustrations of similar hilts in line drawings are in "Cut and Thrust Weapons" Eduard Wagner, 1967 (plates 7,30). Probably the best resource for detailed response would be Michal Dziewulski at the National Museum in Krakow. He wrote the outstanding article on Polish sabres connected to our forum archive site and has worked closely with Professor Zygulski .