Citizen - Auto Dater 40M Jet Ring-Rotor Day-Date - No reserve price - 41204776 - Men - 1964

Presented for auction by Second Vintage This 1964 Citizen Auto Dater 40M is a highly sought-after collector favorite, driven by the brand's fascinating 'Jet' geared ring-rotor automatic movement. Beyond its unique caliber, the watch features a highly distinctive 1960s layout with the day display prominently positioned at 12 o'clock, complemented by an internal cyclops date magnifier and a crisp silver sunburst dial bearing the recognizable blue '7' crown logo. Brand: Citizen Model: Auto Dater 40M Serial Number: 41204776 Movement: 19-Jewel 'Jet' ring-rotor automatic Dial: Silver sunburst with applied indices and day at 12 o'clock Case Size: 38 mm (excluding the crown) Case Material: Plated base metal Production Year: 1964 Condition: Good vintage condition. Timegrapher: +3+6s/day, performing remarkably well. Dial and Hands The attractive silver sunburst dial remains crisp and highly legible, retaining its applied indices and the distinctive blue '7' crown logo. The layout is a classic representation of the era, featuring a full day display arcing across the 12 o'clock position and a date window at 3 o'clock. There is visible staining and debris accumulation localized near the dial edge between the 7 and 8 o'clock positions. The original dauphine style hands show age-appropriate oxidation and light spotting across their surfaces, complementing the vintage character of the timepiece. Case and Crystal The plated base metal case is heavily worn, showing significant plating degradation. Heavy pitting and plating loss are clearly visible across the case flanks and the lugs, accompanied by scratches and general wear consistent with heavy use over the decades. The smooth fixed bezel exhibits matching pitting and wear. An unsigned domed crown shows surface wear. The watch is fitted with a domed acrylic crystal that features an internal cyclops magnifier over the date, presenting with light surface scratches from normal use. Movement Powering this timepiece is the distinctive Citizen 'Jet' automatic movement, known for its unique geared ring-rotor design that circles the periphery of the caliber rather than rotating from a central pivot. The movement is engraved with "19 JEWELS" and "CITIZEN" and appears clean, showing no obvious signs of corrosion or damage. On the timegrapher, it measures +3+6s/day. Exhibiting remarkable accuracy and consistency, performing brilliantly for a vintage timepiece. Strap The watch is fitted with a period correct mesh bracelet that suits the 1960s aesthetic perfectly. The unsigned mesh-style bracelet shows normal wear and light scratches consistent with the age of the watch. Condition Good vintage condition. The dial remains attractive with crisp printing, though it does exhibit localized staining between 7 and 8 o'clock, alongside age-appropriate oxidation on the hands. The plated case and bezel have seen heavy use, resulting in significant pitting, scratching, and plating loss on the lugs and flanks. The acrylic crystal displays light surface scratches, and the period correct mesh bracelet shows normal wear. The movement is running exceptionally well, supported by the recorded timegrapher data. Dimensions The case measures 38 mm (excluding the crown). Remarks This Auto Dater 40M offers a fantastic opportunity to acquire Citizen's distinctive 'Jet' ring-rotor caliber. The charming dial layout, featuring the day at 12 o'clock and the internal cyclops magnifier, makes this a highly engaging vintage piece with undeniable character. History During the 1960s, Citizen introduced the 'Jet' automatic movements, which quickly became famous for their geared ring-rotor design. This peripheral winding mechanism was a creative departure from traditional central rotors and remains a defining technical achievement for the brand. The Auto Dater line utilized these calibers to provide practical, feature-rich watches for the everyday consumer, often experimenting with bold and highly legible dial layouts. Today, these distinctive ring-rotor models are cherished by enthusiasts for their unique mechanical approach and classic mid-century styling. / Second Vintage SKU: CIT-CAD-0006