I have never owned a Falcon Black Diamond, and this is a nice bike, but the Black Diamonds I remember had no brazings for gear and brake-cable stops and had a wrap-around seat stay where the wrapped section was reduced in diameter from the stay but remained cylindrical, unlike many others at the time where the wrapped portion was flattened. As I say, a nice bike, especially that elegant fork-rake, but are you sure it is a Falcon Black Diamond?