Another find I need help with :)

[bbheigle0605]

Found these at a old plantation site. Is there a way to age brass door knobs? Also, what is the other item? I was thinking belt buckle but not sure. It has weight to it. Thanks again!!!!

 

[Bryanhashemi]

how deep was the door knob? is it all brass or is the knob part wood? could be from the old house that stood there.