Hi,
It is not Ottoman Empire but made in Persia, numeral ‚‚4‚‚ being Eastern Arabic variant (Farsi, Urdu).
Most probably Isfahan, but it takes time to search every post wit Persian marks.
https://www.google.rs/search?q=persian+ ... =1#imgrc=_search.php?keywords=iranInscription is Armenian but engraved after the exodus.
Dating would depend on identified maker, hopefuly.A lot to search for but an interesting task.Although written in Arabic, only Farsi speaker can read it.Arabs would recigniye letters but not the meaning.
Best wishes