Jim,
As a matter of fact, I never noticed that the Flyssa's pommel looks just like Karabela's!
If this is not a chancy fluke, then it is an argument in favour of Turkish, rather than Iranian, origin of Karabela's "eagle's head" pommel.
Indeed, rather than Iraqi Karbala, we may revisit a place neas Izmir, called Karabel.
We tried to stay away from the Black Sea Yataghan mine field ( Laz Bicagi), and I can hear a collective groan. But then (just bear with me, I am just a piano player!), there is a rather marked similarity in the "ricasso" part of the blade between Flyssa and BSY. Also, if we take a Flyssa and bend it along the long axis, we end up with a..... And I am not talking about a similarity between the tangs....
Once again, I am raiding Artzi's site
http://www.oriental-arms.com/item.php?id=1143
vs.
http://www.oriental-arms.com/item.php?id=1003
BSY is like a bad habit: always comes back!