It's a real mystery to me why door knob makers make so many different faux-aged finishes, yet none of them actually look like the patina of an a brass door knob.
I guess it's because aged brass has a sickly green tint to it. Whatever. I actually like it. But it looks wrong next to the fancy oil-rubbed bronze finish applied to the new hardware -- which is, as SG pointed out, just plated pot metal with synthetic finish. Whatever. The old handle was solid brass, but its guts didn't really hold up despite being all metal. And the inside knob was lacquered and didn't match any others in the house. I guess if I wanted I could have had it repaired, but it just didn't look that great anyway.
It wouldn't surprise me, though, if the next big thing was unlacquered solid brass hardware. 'Course the hardware makers probably wouldn't like that because of the cost of copper.