Thread bump ... and first post

I thought I would add to an already existing thread, rather than start my own
I owned one of these knives (a fork and knife set, not a dagger) as well at one point ... I got mine from an individual who had served in Iran/Persia before the Revolution, and even knew the Shah. So I assumed it was a Persian trousse type of set.
Members from a knife forum I'm part of helped me with the Jezzine id however. My question is ... when did the bird motif first begin in that area ? Or in other words, at what point did they first start focussing on it iconically ? I'd like to know because I'm curious which came first ... the chicken or the egg so to speak. Did the design of the bird originate with them, or did they borrow it ? I've seen similar designed handles on so called "Bosnian" made knives, so I'm assuming a country like that copied the style as well, for example.
Thanks for any help