1976 Seiko Bell Matic, from the days when a japanese watch was still cool! 1st and only owner since I got it new as a youngster, and she's still running smoothly and rings like a real alarm should! No beeps, whistles or sirens there, just a loud clear bell. When it rings, it immediatly becomes a conversation piece!
Not my most expensive or rarest piece, but one of my favorites nevertheless.