Patek Philippe 3605 (Pre-owned - Good) — USD 41,995 on eBay

The Patek Philippe reference 3605 is recognized for its distinctive "Ellipse d'Or" case shape, a design introduced by the brand in the late 1960s. This reference represents an early application of the Golden Ratio principle to watch case design, aiming for aesthetic harmony. It stands apart from more traditional round or rectangular cases, offering a unique profile that became a signature for Patek Philippe during its production period. The model emphasized a blend of artistic design with horological craftsmanship, positioning it as a dress watch with a strong visual identity. This reference typically features a substantial gold case, often in yellow gold, with dimensions that provide a notable presence on the wrist while maintaining a refined profile. It houses an automatic movement, characteristic of Patek Philippe's commitment to self-winding calibers during this era. The watch is fitted with a sapphire crystal, ensuring durability and clear visibility of the dial. The movement is engineered for reliability and precision, reflecting the brand's high standards for its internal mechanisms. For collectors, the 3605 appeals to those interested in Patek Philippe's design evolution and the brand's exploration of non-traditional case forms. Its "Ellipse" design offers a distinct alternative to the more common Calatrava or Nautilus lines. Variants of this reference might include different dial finishes or bracelet options, but the core design language remains consistent. It represents a period where Patek Philippe was experimenting with bold aesthetic statements while upholding its reputation for mechanical excellence.