Lot Essay
The 1950s saw the birth of a number of extremely rare Rolex references. This is most probably due to Rolex fine tuning its products for the professional market, and thus we can see models in production for a very short time, and soon upgraded to a new version. Reference 6205, for example, was in production only from 1954 to 1955. It is the evolution of reference 6205, and it presents a sturdier case design with a more domed case back. The crown as well increases in size, from 5.3 mm. of ref. 6205 to 6 mm., in order to offer an easier time-setting procedure. Interestingly, the new case design does not impact on the depth rating, which remains 100m/330ft