Accompanied by Patek Philippe Extract from the Archives confirming production of the movement in 1926. It was encased in 1950 and sold on 5 April 1950. Furthermore delivered with a copy of the Bulletin de Marche and two copies of timing sheets from the Geneva Observatory.
The present watch has participated at the Geneva Timing Contest in 1934. The renowned precision adjuster, Mr. F. Modoux, was in charge of the preparations and adjustments.
Mr. J.B. Champion was a passionate watch collector and regular client of Patek Philippe. During the early 1950s, Patek Philippe must have considered him one of their most valued clients, considering that the first reference 2526 ever made, bearing movement number 760'000, was reserved for him. The Henri Stern Agency New York confirm in their letter dated July 27, 1953 to Mr. Victor Brazell, Linz Brothers (one of Dallas oldest jewelry firm) the shipment of the "very first Patek Philippe Selfwinding Watch with 18-karat gold bracelet for Mr. Champion". This watch is now the pride of a highly distinguished private collection.
Mr. Champion's preference were obviously highly precise chronometer watches with Bulletin d'Observatoire, such as the present lot. Another very exclusive piece, a platinum wristwatch ref. 2458 with Guillaume balance is illustrated in Patek Philippe Wristwatches by Martin Huber & Alan Banbery, second edition, p. 253, pl. 389, and was also made especially for him.