Accompanied by Patek Philippe Extrait des Registres confirming manufacture of the present watch in 1915 and its subsequent sale on 23 November 1964, two copies of Bulletins de Dépot and two copies of timing sheets from the Geneva Observatory. It is furthermore delivered with a Patek Philippe wooden presentation box.
Clock watches by Patek Philippe are extremely rare. The present watch is particularly unusual as Patek Philippe is known to have reserved the "Grande and Petite Sonnerie" mechanism exclusively for their ultra complicated timepieces.
Grande and Petite Sonnerie clock watches with no further complications such as the present watch are very rare; to the best of our knowledge less than 10 examples are known today.
An additional and attractive feature of this watch is certainly that it had been presented at the Geneva timing contest in 1920. The renowned precision adjuster, Mr. J. Golay-Audemars, was in charge of the preparations and adjustments. Consequently, the watch obtained the second price with 791 points in its class and the fifth rank among the 43 classed timepieces.