Production of this model, reference 1579, was launched in 1943. The large case and unusual lugs make it easily distinguishable from other Patek Philippe chronograph wristwatches of the era.
Patek Philippe confirm production of the present lot in 1949 and its subsequent sale on December 4th, 1950. Examples in 18K pink gold are very rare.
An archival image of reference 1579 is illustrated in Collecting Patek Philippe Watches by Madeleine & Osvaldo Patrizzi, p. 47.