The watch is a vintage Orient College Perpetual Multi-Year Calendar automatic watch with a green dial. These vintage models are highly collectible and known for their unique multi-year calendar function that displays the day, date, month, and year. Watch Details Brand: Orient Model: College Perpetual Multi-Year Calendar Dial Color: Green sunburst Movement: Automatic (self-winding), typically with 21 jewels Case & Bracelet Material: Stainless steel Typical Reference Numbers: Common vintage reference numbers include Y469672-4A/4C
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