【Rare Model】Rolex Datejust Ref. 6605 Cal. 1066 Gold Solid, with Crown Buckle Maintenance-free, checked by Japan Rolex and a famous watch repair company staffed by former Rolex-certified technicians. Good working condition. This model features the first Datejust function and is the model where the Cyclops lens began. The Ref. 6605, the predecessor to the masterpiece Ref. 1601, is a valuable Datejust with an extremely short production period from the mid-1950s to around 1960. The bezel has fine fluting from the early period, giving it a more classic impression than later models. The dial has a color close to copper, and the powdery texture is unique to this year. This dial color is not seen in the Ref. 1601 and is characteristic of old Rolex watches. The wedge-shaped indexes give the face a powerful impression. The Cal. 1066 is a mechanism of the same system as the world's first bidirectional winding 1030, and it has a mean time screw to adjust the weight of the balance wheel. This allows for more precise accuracy adjustments. The difference from the Cal. 1030 and Cal. 1036 (which added a date function and a 24-hour hand to the Cal. 1030) lies in the method of adjusting accuracy. While the Cal. 1030 uses only the regulator, the Cal. 1066 uses both the regulator and the mean time screw attached to the balance wheel. Famous models that used this movement include the GMT-Master's first model, Ref. 6542, and the antique Datejust Ref. 6605. Slight patina can be seen on the dial due to aging. There is no change in the dial color, and it is hardly noticeable when worn. The indexes show the same aging as the dial. They reflect light well and do not have a worn-out impression. The case has long lugs, providing a good fit. The bezel has some scratches but retains its edges, giving a good impression. Please check the images. In the 1950s, the category of wristwatches itself was a luxury item. The Rolex Datejust, in particular, was an incredibly high-end item, unbelievable by today's standards. Try wearing this rare year Datejust on your wrist. For reference, I have attached market price information from Chrono24, a luxury watch sales site in Germany. A strap will be included.