Thank you for viewing this listing. Reference Number26-7-31-2-8243 Citizen Auto Dater 7 It features a day window at the 12 o'clock position and a date window with a magnifying lens at the 3 o'clock position—a beautiful design that served as the precursor to the later best-selling "Crystal Seven" series. The "SM" logo indicates a special "Slim" (thin-profile) model. It is a rare model with lower circulation numbers than the standard Auto Dater 7. Additionally, the "23" (23-jewel) specification represents a higher-end, premium configuration. The watch features a "fluted bezel" (or coin-edge bezel) with a serrated design that exudes a sense of luxury. It is a masterpiece of Japanese watchmaking history, having competed for dominance in the Japanese business watch market against rivals like Seiko's "5" series. While primarily an automatic watch, the mainspring can also be wound manually by turning the crown upwards (clockwise) without pulling it out. ⸻ Condition It is running smoothly. The day and date cannot be adjusted manually. The display changes between approximately 10:00 and 2:00. The precision of internal components has not been verified. As this is a vintage item, there are signs of use, scratches, and aging. Please carefully examine all photos for details regarding its condition. The strap is an aftermarket (non-original) item. Although it shows signs of wear, I have kept it on the watch due to its unique style. ・Suitable for men or women depending on preference; please judge based on the size. ⸻ Please note the following. Shipped from Japan. Shipping costs are required in addition to the winning bid price. Depending on the buyer's country, import duties or consumption taxes may apply. These charges are the responsibility of the buyer. Shipping The shipping carrier has not yet been determined. Please note that depending on your location, customs clearance may take a significant amount of time after shipment. Courier pickups are not available on weekends, so shipments are not processed on Saturdays or Sundays. Thank you for your understanding.