According to the Archives of Montres Breguet, the present watch was sold to the Count of Campo Alegre on 2 October 1847 for the sum of 3,500 Francs.
It is one of Breguet's early timepieces fitted with the keyless stem winding and hour setting system marketed by Abraham Louis's son Antoine-Louis already in 1830. His invention, the ancestor of all modern winding mechanisms, consisted of a knurled winding button to be turned from left to right until a stop was reached. The first watch incorporating this revolutionary system was sold on 30 December 1830 to Comte Charles de l'Espine.
Combining technical prowess, elegant design and fascinating provenance, the present watch is a fine trophy for the connoisseur of horological masterpieces from the celebrated house of Breguet.