Beautiful pieces Flavio!
I had thought that the very large bare bone/rhino eared pommel was Turkish, while those encassed in silver and brass were Greek and misc. Ottoman. The really angular (almost cubic) ones are Serbian...I recall reading. Still need to get the Atsvatsurian book
Looking at your example I start to wonder about the bolster...the thing about most yataghan I have seen is that the junction between blade and tang is covered by the extended bolster piece, so no way of seeing whether there is an integral bolster like the flyssa has, or not. Is the tang just a flat continuation of the blade or is there a "bolster bulb"?
Regards,
Emanuel