Citizen Auto Dater 520 – Cal. 5203 – 21 Jewels – Vintage Automatic – 1960s – Excellent Condition An elegant and increasingly collectible Citizen Auto Dater 520, powered by the reliable Citizen Caliber 5203 automatic movement with 21 jewels. Produced during the golden era of Japanese watchmaking in the 1960s, this model represents Citizen's transition to slimmer automatic movements while maintaining excellent reliability and refined finishing. The 5203 is a respected in-house caliber featuring both automatic and manual winding, day-date display, and quick-set date adjustment. This example is presented in outstanding cosmetic condition. The stainless steel case retains its sharp lines and attractive factory polishing, while the silver sunburst dial remains exceptionally clean with beautifully preserved applied baton hour markers and the distinctive framed day and date windows. The signed crown is present, and the watch is fitted with a quality black leather strap that perfectly complements its classic appearance. The movement is clean and correctly signed Citizen 21 Jewels, caliber 5203, as shown in the photographs. The watch is currently running and presents beautifully. As with all vintage mechanical watches, the service history is unknown, therefore future servicing may be recommended according to the buyer's expectations. Specifications Brand: Citizen Model: Auto Dater 520 Movement: Citizen Cal. 5203 Automatic with manual winding 21 jewels Day & Date display Stainless steel case Case diameter: 36 mm (excluding crown) Lug-to-lug: 41.7 mm Acrylic crystal Black leather strap Made in Japan Approximate production period: 1960s A highly attractive vintage Citizen that combines timeless design, an important in-house movement, and excellent overall presentation. An ideal addition for collectors of classic Japanese watches or anyone looking for an elegant everyday vintage timepiece. Please refer to the photos as part of the description of the watch. Fast delivery 2-3 working days with DHL Express!!