The Panerai Luminor 1950 PCYC 3 Days Chronograph Flyback Automatic Acciaio Stainless Steel. Model reference: PAM 654. Officine Panerai has a truly unique and longlasting bond with the sea, as shown by its range of chronograph and regatta watches recalling classic sailing yachts in terms of design and functions. Since the beginning of the twentieth century, the Italian brand has supplied high precision instruments to the Royal Italian Navy for the needs of its special underwater commandos. Panerai chief executive Angelo Bonati is a keen sailor, and for that reason the watchmaker has been a sponsor of the Panerai Classic Yachts Challenge (PCYC) since 2004. Open only to yachts built of wood or metal before 1950 (known as “vintage yachts”) and before 1976 (“classic yachts”), as well as replicas of such yachts, the PCYC is comprised of several regattas over the course of the year. The watch features a 44mm steel case, as well as the P.9100 movement that’s automatic and features a flyback function. And like all of Panerai’s in-house chronograph movements it has a vertical clutch and column wheel – hidden beneath a solid case back engraved with the PCYC logo. The flyback function, controlled by a push-button at eight o’clock, instantly returns the chronograph hands to zero and simultaneously restarts without it being necessary first to stop them and return them to zero by pressing the stop and reset buttons. “AISI 316L 1.4435 stainless steel is Officine Panerai’s material par excellence since it is highly resistant to corrosion and is hypoallergenic, making it ideal for contact with the skin. The Panerai watches created for the Italian Navy were made of austenitic stainless steel, a reliable material that was also resistant to the extreme environmental conditions in which the commandos operated. The dial has a nautical tachymetre with a scale in knots, which can measure the average speed of a boat over one nautical mile. The the ivory dial has dot-and-batons indices and faux-vintage Super-Luminova. The P.9100 calibre is the first automatic movement with chronograph functions developed by Officine Panerai and it is produced entirely in the Panerai manufacture in Neuchâtel, with materials and standards of workmanship at the peak of the sector in terms of technology, quality and reliability. With a chronograph with a vertical clutch and column wheel, the new calibre is unusual in that the chronograph minutes are displayed by a central hand which jumps forward once every 60 seconds. It also has the useful flyback function. This enables the chronograph hands which are already running to be returned instantaneously to zero and restarted without first having to stop them, return them to zero and then restart them. This function is controlled by the push-button at eight o’clock, which is also used to return both hands to zero when the chronograph has already stopped. The two spring barrels in series give a power reserve of 72 hours. The choice of the double spring barrel enables thinner, longer springs to be used, which is beneficial for the duration and evenness of the supply of energy. The watch comes in original packaging, with a set of documents.