My first 1911, as old as I am
I don't have anything really old, but the oldest gun I have, a Colt Sistema Model 1927 (it's a 1911 made on Colt machinery in Argentina) was made in 1948, which also happens to be the year in which I was born.
It's the first 1911 I ever owned; I have no idea how many rounds have gone through it, the sights are rudimentary at best, it feels as if it has a 60# trigger, and the hammer leaves me bleeding every time I shoot it.
But it runs smoothly and is more accurate than I am. And although I currently own two other, newer Colt 1911s, if I had to bet on only one it'd be the old Sistema. For being 63 years old, we're both in surprisingly decent shape.
EDIT: Oops! This is the Rifle Forum, isn't it? Well then, as SNL's Emily Litella used to say, "Never mind!"