Patek Philippe 3900 (Pre-owned - Good) — USD 53,392 on eBay

The Patek Philippe Nautilus reference 3900 represents an early quartz iteration within the Nautilus family, introduced during a period when quartz technology was gaining prominence in the watch industry. This reference offered a more accessible entry point into the Nautilus line compared to its automatic counterparts, while retaining the distinctive Gérald Genta-designed case shape that defines the collection. It was part of a broader strategy by Patek Philippe to navigate the evolving watch market of the late 20th century. This model features a case diameter of 33 mm, crafted from stainless steel, maintaining the characteristic porthole-inspired design with integrated bracelet. The watch is powered by a quartz movement, specifically the E 27 caliber, which allowed for a slimmer profile and consistent timekeeping. The crystal protecting the dial is sapphire, ensuring durability and scratch resistance. For collectors, the 3900 is notable as a historical artifact reflecting a specific era in Patek Philippe's production and the wider watch industry's engagement with quartz technology. It appeals to those interested in the complete lineage of the Nautilus, offering a distinct alternative to the mechanical versions. Its smaller size also makes it a versatile option within the vintage Nautilus market.