How to manufacture antediluvian n rusty chief door knob shine ? the main door knob, door touch and key holes i ponder its...

the main door knob, door touch and key holes i ponder its made of copper metal. how to make it look resembling new ?
Answers:    If the door knob and escutcheon plates( keyholes!) are made of copper, or(most likely) brass after they are not covered in rust but are oxidised.

The best style to clean would be to buy a proprietary brass cleaner from a hardware store- you could other take one of the escutcheon plates beside you so the shop assistant can confirm which metal it is.

Failing that the vinegar/ brown sauce option is virtuous. then finish rotten with a cream cleaner( Cif). But as other test on the put a bet on of the escutcheons first to test compatibility.
unscrew it and soak surrounded by brown vinegar for several hours - this will eat the rust - after scrub with rope brush or steel wool.