There's a whole industry built on making new things look old: sanded edges, sprayed-on "patina," pre-dinged finishes, hardware that shows up already tired. But real wear follows a logic manufactured distressing can't fake, and once you can read it, the costume gives itself away.
Where real wear falls
Real wear follows the hand. Metal brightens where hands touch it: the middle of a doorknob, the pull side of a latch, the switch you flick a thousand times a year. It darkens where hands don't reach, down in the recesses and crevices and the underside of a casting where oxidation gathers undisturbed. On an old brass piece, the light and the dark sit precisely where a century of use would put them. The surface is a record of how the thing was handled.
Where faked wear goes wrong
Manufactured age gets that logic subtly wrong, because it's applied by someone in a hurry rather than laid down by time. The wear shows up where a person thought it would look good, not where a hand would have worn it. The bright spots and the shadows don't line up with how the piece gets used. We won't publish a recipe for aging brass, and we don't work that way ourselves. When a piece here shows its age, that age is real, cleaned up and stabilized but never invented. When a piece is new, we tell you it's new.
Salvager's Note — reading real wear: Bright where hands touch (knob center, latch pull, switch), dark down in the recesses where hands don't reach. If the bright and dark line up with how the piece was used, it's genuine; if wear sits where it merely "looks good," suspect distressing.