Yes, a curious mixture of influences in any case!
The blade also reminds me of Dagestan daggers,
unfortunately there is no inscription or stamp on the blade.
For the rivets on the handle,
I found an old post with a Persian qama, validated by the community
,
same kind of blade, identical shape and decorations, the rivets also protrude widely from the handle...
I don't think ''mine'' have been modified as well as the horn hilt which fits exactly with the blade, they just must be really really old or bad preserved
like the decorations that have disappeared on the blade ( and we see on this model).
( Sure,Bizarre on the other hand that the fullers are impeccable, done later?? )
I agree, with you, as I already mentioned ,
the sheath has no attachment to be fixed and seems more to be done for decoration,
this structure without fixings made me think of a potential Ottoman origin,
in addition to shaped corals, yatagans and long daggers were often worn in a belt-pouch and there is not always a clip for fix it...
the scabbard, maybe/certainly later made , is still old work,
the traces of old black lateral rust at the beginning of the blade correspond to a lateral break at the entrance to the scabbard favoring oxidation.
So they are travelling together since a long time...
Has anyone any idea of the origin of the similar small dagger of which I posted the photos before ?,
It will fix the origin of the scabbard ...
In any case, I don't think these were low-end souk pieces. I have rarely seen shaped coral pieces of this size with this arrangement of silver and brass wires and so many silver studs , if it was common work,
one would find many nowadays.