This watch is in the founders Iconic collection of Patek Philippe watches and not for sale.

Introduction: 
Patek Philippe 2481J, Vintage Calatrava, manual wind watch, measuring 37mm with a 27 SC caliber movement #705005 / 691350.  This watch was made in 1955 and is in its original condition with original crown, dial, hands and a not polished case, with strong hallmarks.  The watch is accompanied with an extract from the archives confirming its date of manufacture and further sale.  It is also accompanied with its original Patek vintage buckle.  The watch is in New condition and was just recently serviced and comes with a 2 year warranty.

Date & Paperwork:
Extract from the archives confirming its date of manufacture in 1955 and further sale in 1956.

Essay:

Model 2481 was in production for nearly a decade from 1950 to 1960, with most examples in yellow gold, a more limited production in pink or rose gold, one example is known in platinum. 
With its 37mm case diameter, it is one of the largest vintage Patek Philippe ever produced, a trait that is nowadays making this model more and more sought-after. Equipped with the celebrated 27SC caliber, the best sweep seconds caliber available at the time. The fascinating case design still retains a "Calatrava" feeling, but with the adoption of unusual, avant-garde solutions such as the concave bezel and the heavily stepped lugs, it is a timepiece that, thanks to the visionary genius of Patek Philippe's design artists, can be worn and appreciated daily even today, more than seventy five years after its conception.  Known as the ‘King Size’, it was introduced into the market in 1950 and was one of the largest wristwatches ever made by Patek Philippe. The model was available with the standard silvered dial.  There were approximately  650 examples in yellow gold and 350 in pink gold. The cases were made by the Le Locle master case maker Bernard Dubois.