Zenith Grande Chronomaster Open El Primero XXT – 03.1260.4021 – Automatic Chronograph – Power Reserve – 45mm – Men Description / Features The Zenith Grande Chronomaster Open El Primero XXT Ref. 03.1260.4021 is an impressive Swiss mechanical chronograph showcasing one of Zenith’s most celebrated high-frequency movements. The distinctive silver dial features an open-worked display revealing the legendary El Primero mechanism in operation. Roman numeral hour markers, elegant hands and the finely detailed dial give the watch a sophisticated classical appearance while retaining the technical character of the Chronomaster collection. At the heart of the watch is the Zenith El Primero Calibre 4021 automatic movement, operating at the famous high frequency of 36,000 vibrations per hour (5 Hz). The movement combines chronograph functionality with a power reserve indicator and the characteristic open-heart display. The large stainless-steel case gives the watch a strong wrist presence, while the sapphire exhibition case back provides an additional view of the beautifully finished mechanical movement. This model represents an attractive combination of Zenith’s traditional Swiss watchmaking, the legendary El Primero high-frequency chronograph movement and the distinctive open-dial design for which the Chronomaster Open collection became well known. Details / Specifications Brand: Zenith Collection: Grande Chronomaster Open El Primero XXT Reference: 03.1260.4021 Gender: Men Movement: Automatic Mechanical Calibre: Zenith El Primero 4021 Frequency: 36,000 vibrations per hour (5 Hz) Power Reserve: Approx. 50 hours Case Material: Stainless Steel Case Size: Approx. 45 mm Dial: Silver Open-Worked Dial with Roman Numeral Hour Markers Crystal: Sapphire Crystal Case Back: Sapphire Crystal Exhibition Case Back Strap: Black Leather Strap Functions: Hours, Minutes, Small Seconds, Chronograph, Power Reserve Indicator Included Items: Only the items shown in the photographs are included in this sale. Condition Crystal: Fine scratches are present. Dial: Some minor staining is visible between the 11 and 12 o'clock positions. Hands: Some minor staining is present. Bezel: No noticeable scratches. Case: No noticeable scratches. Case Back: A few very small dents remain that could not be removed by polishing. Strap: Fitted with a brand-new aftermarket strap and brand-new aftermarket buckle. Original Folding Buckle: No noticeable scratches. Timegrapher Reference: Daily Rate: -4 to +4 seconds/day Amplitude: 299° These measurements are for reference only and may vary depending on position and operating conditions. The watch case and original folding buckle were professionally refinished/polished in August 2026. Please carefully review all photographs for the actual condition before bidding. Important Notice – Please Read Before Bidding Thank you very much for viewing this listing. To ensure a smooth and secure transaction, please carefully review the following notes before placing your bid. Included Items What's Included: Only the items shown in the photos are included in this sale. Accessories & Size: Please check the images carefully. We cannot respond to questions regarding included accessories or bracelet size after the auction ends. After-Sales Support Reporting Issues: If you encounter any issue, please contact us via Catawiki within 3 days of delivery. Please include clear photos or videos. Our Commitment: We will respond promptly and do our best to resolve the matter fairly. Customs Duties & Taxes Buyer's Responsibility: As the item ships from Japan, all customs duties and taxes are the buyer’s responsibility. Tax Examples: Import duties and taxes may apply depending on your country (e.g., Spain: 21%, France: 20%, Italy: 22%). Cancellation / Withdrawal Return Costs: If the buyer cancels or withdraws after purchase, all shipping costs and any return import duties/taxes will be the buyer’s responsibility. Shipping Carrier: Worldwide shipping via DHL Express only (carrier selection is not available). Handling Time: Orders are usually shipped within 3–7 business days (weekdays only). Inquiries: We kindly ask that you refrain from sending shipping date confirmation requests. Customs Declaration Policy No Under-Valuation: We cannot declare a lower value or mark items as “gifts” as this violates international shipping regulations. Policy Enforcement: Requests of this nature will be declined and may be reported to Catawiki. Thank you for your understanding. We look forward to a smooth and pleasant transaction.