Up for auction is a breathtaking, highly sophisticated, and fully original Omega Constellation Double Eagle Perpetual Calendar (Ref. 1513.51.00). This timepiece is in absolute pristine, flawless 10/10 collector's condition with zero scratches. It is powered by Omega's high-end, thermocompensated Caliber 1680 high-accuracy quartz movement, offering Swiss precision with absolute grab-and-go convenience. Features: Perpetual Calendar: Programmed until the year 2099, the calendar automatically adjusts for short/long months and leap years without requiring any manual date correction. Timezone Function: Features an independent hour-hand adjustment, allowing you to change travel hours seamlessly without stopping the minutes and seconds hands. Technical Specifications: Brand: Omega Model: Constellation Double Eagle Perpetual Calendar Reference: 1513.51.00 Serial Number: 59055381 (clearly engraved on the outer rim of the case back) Movement: High-Accuracy Quartz, Omega Caliber 1680 (11 jewels, rhodium-plated finish) Case Material: Stainless Steel Case Diameter: 38 mm (excluding crown) - wears beautifully larger due to the integrated bracelet design. Bezel: Brushed stainless steel featuring engraved Roman numerals and the iconic Double Eagle side claws (griffes). Dial: Smooth matte black dial with applied faceted silver-tone markers, luminous hands, and the iconic Constellation star above 6 o'clock. Crystal: Scratch-resistant sapphire crystal with anti-reflective treatment (completely pristine, scratch-free). Case Back: Solid steel with the "Double Eagle" engraving and the classic 8-star Constellation Observatory medallion. Bracelet: Integrated stainless steel bracelet with a hidden butterfly deployment clasp, highlighted by a solid gold Omega logo accent. Comes with full links (complete bracelet). Condition Report (Flawless 10/10): Case, Bezel & Bracelet: Flawless, brand-new condition. Absolutely scratch-free with sharp, unpolished factory case lines and finishes. Truly collector grade. Dial, Hands & Crystal: Pristine and perfect. Lume glows brilliantly. Movement: Running flawlessly with atomic-clock precision. Fresh battery installed. All functions, including the independent hour setting and perpetual calendar, operate perfectly. Shipping & Customs Information (Important for Buyers): Shipping Method: The watch will be packed with utmost care and shipped via premium express couriers (UPS or FedEx) with full tracking and insurance. Customs Duties & Taxes: This item is shipped from Turkey (Outside the European Union). Please note that any potential customs duties, import taxes, VAT, or clearance fees imposed by your country's local customs office are the sole responsibility of the buyer. Please check your country's import regulations before placing a bid.