Welcome to the forum. Your interest about the Ottoman period is double welcome, because we are a minority here, squeezed between “dha-mafia” and “keris addicts”.
About the pieces now. The place you mention used to be Persian Empire at 500BC and more specific somewhere between Media and Armenia of the time. (
see this map ). It is the time of Cyrus the Great.
It is very difficult to say anything about plain metal objects if you take them apart from the places they found. They could easily be fakes, for example. Or great artifacts. This is why excavations from amateurs are forbidden in our countries and trading of ancient artifacts without the right papers is also forbidden.