Of superb quality, the present timepiece is part of the highly-coveted Rolex reference 6263. Arguably the most sought-after manual-wound chronographs of the manufacture, the timepiece distinguishes itself from its counterparts through its rare sigma dial. A rarity in itself, chronographs were bestowed with the Greek symbol “Sigma” to the bottom of their dial on each side of the “T Swiss T” signature, showcasing the union of the three Rolex dial makers: Singer, Stern and Beyeler to indicate that the applied baton numerals and hands were crafted of gold, in this instance white gold.

Launched in the 1970s, the reference 6263 is the sister reference of the 6265. Inheriting attributes of reference 6240, the chronograph bears the “Oyster” designation on the upper-half of its dial and is built with a black bezel graduated to 200 units per hour, screw-down pushers, a screw back and screw-down crown. With the upgraded mechanical Valjoux caliber 727, succeeding caliber 722-1, the wristwatch was made in steel, 14 and 18 karat gold and it is estimated that over a 20-year period, only 24,000 reference 6263 and 6265 were produced in stainless steel.