Thank all of you for your replies....
I think that Eftihis is right. I have compared the blade with a similar French Hussar blade of mid 18th century and it was exactly the same. Same length(1m aproximately), same curve, the two grooves start right after the grip, ending up a few cm before the peak. It weights about 600 grams though the crossguard missing. Despite its relic condition i can say that it is of good quallity.
Usually Ottoman sabres curve more than this and the grooves start a few inches after the cross and generally i consider them as heavier.
except large quantities of weapons that were imported into Crete, There was the Egyptian rule. It is well known that at that time the Egyptian army was French equiped and French consulted...
So it is possible that it was a spoil of war from that era
Thanks again