勞力士，精細，不銹鋼鏈帶腕錶，配計時功能、“σ”錶盤及熱帶棕色子盤，“Cosmograph Daytona”，型號6263/6265，約1975年製

With Rolex fitted presentation box and outer packaging.

The present reference 6263 features a dial that is known as a "Sigma" dial, indicated by two small Sigma symbols on either side of the "T Swiss T". The Sigma symbols indicate that the baton numerals and hands on a dial are made of gold, in this case white gold.

The particular example is made all the more desirable by the fact that the subdials have discoloured over the years to a dark chocolate brown.