Reference 4313 was launched in the late 1940s and is characterized by the large teardrop-shaped lugs mounted onto the bezel, a feature found exclusively in this unusual model. The watch offered here for sale stands furthermore out by the unusual choice of a stainless steel and pink gold case, a combination scarcely used for chronographs made by the celebrated house. The atypical dial is distinguished by the omission of any of the technical scales (tachymetre, telemetre or pulsometre) that one would usually expect on this reference. Consequently the entire layout could be modified, moving the numerals further to the edge and hence increasing the readability. Interestingly due to the different dial proportions, the watch, already one of Rolex's largest 1940s chronographs, appears even larger.
One of the rarest gems in Rolex's celebrated chronograph family, extremely well-preserved and unmolested examples of this niche model are exceedingly rare. Obviously hardly ever been worn if at all the present ref. 4313 impresses by its virtually mint condition, the case showing no wear as it has most probably never seen a polishing cloth in its over 60 years of life. In fact, its proportions remain astoundingly crisp, most evident to the beholders eye are the sharp edges of bezel and lugs and the crisp serial number and inscriptions Acier Inoxdiable and Modèle Déposé to the outside of the stainless steel case back, particularly sensible to regular wear or polishing. The dial displays a charismatic warm, champagne patina which has formed over the years. It is interesting to note that when moving the hands, gilt marks appear at the 8 past 9 position, showing also that the hands have remained in this position for a long time.
For an example of a yellow gold reference 4313, case no. 270'303, see 100 Superlative Rolex Watches by John Goldberger, p. 53.