This watch is one of the only 5 examples produced as single wristwatch. It is almost the same model as the wristwatch presented in the Souscription set made specially for the theme auction The Art of Breguet Antiquorum Geneva on April 14 1991 lot 203.The Souscription wristwatch bears an auxiliary dial for48 months the present model for 12 months and one extra hand for the leap year.