Highlights at a Glance: - We ship via express delivery. The average shipping time within Europe is just one day from the date of shipment! - With us, you also have a long-term point of contact for all matters related to service, maintenance, refurbishment, and repairs. - Watches bearing the “Beyer” inscription on the dial come from Beyer Chronometrie in Zurich, Switzerland’s oldest watch shop. - Extremely rare reference, produced in very limited quantities - 18-karat yellow gold case - Vintage from ca. 1960 - Automatic movement, Cal. 8531 & Plexiglass Introduction: The IWC Ingenieur Ref. 666 is one of the brand’s most significant vintage models—a watch that combines technology, history, and rare collector’s value. The Ingenieur was originally developed as a robust, anti-magnetic watch for engineers and scientists and is now one of IWC’s most iconic lines. With its classic 36 mm case, this reference embodies the perfect proportions of the early Ingenieur models—elegant, technical, and timeless all at once. What makes this example particularly exceptional is its 18K yellow gold case, a version that was produced only rarely and is consequently hard to find on the market today. Another highlight is the Beyer signature on the dial. Watches bearing this signature were sold through the long-established Zurich retailer Beyer Chronometrie and are now among the most sought-after variants among collectors. In all fairness, we would like to mention that the dial exhibits a certain amount of age-related patina. Viewing: In-person viewing is available by appointment at our location. We’re happy to assist you by phone or chat. Why buy from us? You’re not just buying a new watch—you’re also buying the seller! With over 1,500 5-star reviews, we stand for trust, expertise, and reliability. We and our in-house master watchmaker are here for you even after your purchase—for service, maintenance, refurbishment, and repairs. And of course: You receive a 1-year warranty on the movement—directly from us. Condition: Our photos are high-quality macro shots that reveal significantly more detail than is visible to the naked eye. As a result, even the finest signs of wear may appear more pronounced than they actually are. In reality, our watches typically look even higher-quality and better-maintained than they do in the photos. If you have any questions about the condition, please don’t hesitate to contact us—we’d be happy to advise you personally. Overall Rating: Very Good - Case: Very Good - Crystal: Very Good - Clasp: Very Good - Strap: Very Good The strap fits wrists up to 19 cm in circumference. We’d be happy to adjust the strap for you before shipping. Do you have a larger wrist? Please contact us. Wrist Shot Info: Photo taken on a 17.5-cm wrist. Movement: The movement has been inspected by our experienced master watchmaker and found to be in perfect working order. You receive a 1-year warranty on the movement. What’s Included: - IWC Ingenieur, - In-house certificate of authenticity / warranty card - Plain box - Official sales receipt Buyer Information: You receive a 1-year warranty on the movement. If the watch is opened during the warranty period, the warranty becomes void. No warranty is provided for water resistance. The purchase price is subject to differential taxation under §25a UStG. Value-added tax is not shown on the invoice. 14-Day Return Policy: The buyer bears the direct costs of return shipping