This was Paul Morrow's commlock. Prentis Hancock kept the prop after he left the series, and brought it to many conventions. At the Breakaway 1999 convention it was sold in a charity auction, on 13th September 1999, for $1999. Notice the pencil marks around the front keypad buttons, showing the prop maker aligning them. Note in Alpha Child when Paul shows Jackie his commlock, he is using the working screen prop.
Below, the Morrow commlock with a modern replica.
Pictures thanks to Keith Young