A. Lange and Söhne 405.035 (Pre-owned - Excellent) — USD 109,997 on eBay

The A. Lange & Söhne Datograph Perpetual Tourbillon reference 405.035 combines a flyback chronograph with a perpetual calendar and a tourbillon, representing a highly complex offering within the brand's Datograph family. This particular reference is distinguished by its platinum case and black dial, providing a cohesive and understated aesthetic for its intricate mechanical capabilities. It stands as a significant example of Lange's approach to integrating multiple grand complications into a single timepiece. The watch features a 41mm platinum case, housing the manufacture caliber L951.6. This manual-winding movement is visible through a sapphire crystal caseback, showcasing its intricate finishing and construction. The power reserve for this movement is 60 hours, and the watch is fitted with a sapphire crystal on the front. Water resistance is rated at 30 meters, suitable for everyday wear. This reference appeals to collectors seeking a comprehensive complication set from A. Lange & Söhne, offering both practical functions and high horology craftsmanship. Its combination of a flyback chronograph, perpetual calendar, and tourbillon places it among the most technically ambitious watches in the brand's contemporary catalog. The platinum case and black dial variant is a classic combination for such a complex instrument.