Patek Philippe 5164R (Pre-owned - Excellent) — USD 134,000 on eBay

The Aquanaut Travel Time reference 5164R-001, introduced in 2016, expands the Aquanaut collection with a dual time zone complication. This model integrates a practical travel function while maintaining the distinctive aesthetic of the Aquanaut line, characterized by its rounded octagonal case and embossed dial pattern. It offers a sophisticated solution for frequent travelers, allowing for simultaneous display of local and home time with day/night indicators for both. This rose gold variant adds a warmer material option to the existing steel versions of the Travel Time. This reference features a 40.8 mm rose gold case with a sapphire crystal case back, revealing the self-winding caliber 324 S C FUS movement. The movement provides a power reserve of 35-45 hours and incorporates a Spiromax balance spring. The watch is fitted with a screw-down crown and is water resistant to 120 meters. The dial is a brown gradient, complementing the rose gold case and the composite strap. As a Travel Time model, the 5164R-001 appeals to collectors seeking a functional complication within a sport-oriented design. Its rose gold construction positions it as a more luxurious option compared to its steel counterparts, offering a different aesthetic while retaining the same technical capabilities. The integrated pushers on the left side of the case allow for easy adjustment of the local time zone, making it a practical choice for global travel.