• Brand: Rolex • Model: Oyster Perpetual Datejust 36 "Sigma Dial" , In "Excellent" condition. All functions work perfectly. "Very Classy, Exclusive and Prestigious Model. From Luxury and High-End Timepiece Brand , Rolex." When the Rolex Datejust was launched in 1945, it became the First Wristwatch whose date automatically changed at midnight, without the need for manuel adjustment. Rolex created the Datejust in celebration of the brand's 40th anniversary. Safe and smart investment for future. > Very Rare Sigma Dial. "σ T SWISS T σ" Rolex Sigma dials denote that the indexes and hands are craft from 18K (0,750) gold. This mark is found on a limited number of dials. It is an indication that the indices and hands on the dial are made of 18K (0,750) solid gold. Very rare and collectible timepiece. • Reference Number: 1600 • Serial Number: 28***56 • Production Year: 1971 • Movement: Automatic, Works perfectly. Impeccable at timing. Tested on Timegrapher. > Rolex Cal. 1570 In-house Movement > Power Reserve: 48 Hours > Superlative Chronometer Certified (COSC) Movement In the Swiss watch industry, the homeland of watchmaking, when you ask what a Chronometer watch is, the answer you will receive can be a title that diffucult to get. In order for a watch to put the term Chronometer on its dial, it must pass the Official Swiss Chronometer Testing Institute, namely the COSC. To measure the movement and precision of a watch, COSC places it at different temperatures and inspects it for days under varying conditions. The result should be no more than -4 or +6 seconds of deviation per day. Of course, this is not an easy thing to achieve. So much so that only 3% of the Chronometer watch models produced in Switzerland can get a certificate. • Glass: Original Rolex, In "Excellent" Condition. Scratch free. • Swiss Made, Fully Original • Case & Bracelet: Stainless Steel "Oyster case was the world's first waterproof case made for a wristwatch." • Bezel: Fluted Bezel • Dial: Sigma Dial, In "Very Good" condition. Original, Never restored before. Rare and Unique. • Date Display at 3 o'clock • Case Diameter: 36 mm. (Excl. Crown) • Bracelet: Original Rolex Jubilee Bracelet • Wrist Size: 18 cm. • Screw-down lockable crown • Crown: Original Rolex • Folding and Lockable Clasp • Clasp: Original Rolex • All functions work perfectly. • The watch is in "Excellent" condition. There is no scratch on the glass. It is as seen in the photos. Very Exclusive, Classy and Elegant Wristwatch. • Box: The watch will be sent with 100% Genuine Leather travel box. • Shipping: FREE • Registered and Insured Shipping with Tracking Code in 1-3 days.