OK, I'll play.
My first handgun was a Smith 65-1, bought in the late 80s. It was my nightstand gun until replaced by a G21SF, then my wife's nightstand gun until replaced by a DAO 64 a few years ago.
My 3rd was a Glock 19, made in 1990 and bought around the same time. That was my primary carry gun until I replaced it with a gen 4 19, a few years ago.