2010 - A new version of the Breguet Ref 7637 gong-spring Minute Repeater from the Classique Grand Complications.
The difference, a sapphire-dial which allows the owner to see the detailed finishing and decoration of the movements and the striking mechanism from the dial side which are normally hidden, and the removal of the 24-hour sub-dial.
Limited in production but not as a numbered limited edition with the sapphire dial that allows the movement to be seen for the 1st time - displaying decorated bridges, bars & other components