Rolex-Panerai 3646 Type-E 'Anonymous'. Specification. Brand: Rolex-Panerai. Reference number: 3646. Serial Number: 260934. Year of production: 1944. Metal: Stainless steel. Case Size: 47 mm. Dial: Radium luminous - Rolex, error proof 'California' dial.. Movement: Rolex- Cortebert 618 / Type 1 Mod. Essay. Webb?s is proud to present this Rolex Panerai 3646 Type E Wristwatch circa 1944. It is a highly collectable piece of historical importance, absolutely fresh to the market. This timepiece was made by Rolex for Panerai following strict technical requirements, notably a 47 mm wide (for underwater legibility) cushion-shaped case with soldered curved wire lugs, screw down conical crown, 12-sided case back and a Perspex crystal. The black dial is coated with half Arabic and half Roman luminous radium numerals on a black lacquer background known as California dial (patented by Rolex on May 30, 1941). The dial of the present example is completely unrestored, in immaculate condition, and with its original blued steel luminous hands. The watch is in unpolished condition and shows very few signs of having been worn over the course of its 77 years of age. Similarly, the Rolex-finished Cortebert calibre 618 movement is in absolutely mint condition, without even a trace of a watchmaker having ever worked on it. It comes from a private collection of a watch enthusiast who has owned it for a number of years, and was originally gifted it by a German immigrant to New Zealand who was the son of the original owner over 25 years ago.. Since 2016, three new watches of the Ref. 3646 / Type E surfaced, two of them expanded the number group from 260856 - 261097 (1.1.2016) to 260850 - 260111 (29 watches recorded as of today). This Watch will be only the 31st known surviving example worldwide with similar examples being sold previously at over 100,000 CHF.