IWC IW3905 (Usato - Eccellente) — USD 7,436 on eBay

The IWC Portugieser Yacht Club Chronograph reference IW390507 represents a significant evolution in IWC s prestigious Portugieser collection, bridging the line s celebrated dress watch heritage with contemporary sports functionality. Introduced as part of IWC s expansion of the Portugieser family into more dynamic territory, this reference demonstrates the manufacture s ability to adapt their iconic design language for active pursuits while maintaining the sophisticated proportions and refined aesthetics that have defined the collection since 1939. The Yacht Club variant specifically pays homage to IWC s maritime connections, incorporating nautical-inspired elements that reflect the brand s long-standing relationship with sailing and ocean sports. At the heart of the IW390507 beats IWC s robust Caliber 89361, an in-house automatic chronograph movement that showcases the manufacture s technical prowess with its column-wheel construction and vertical clutch system. This sophisticated movement delivers a substantial 68-hour power reserve while operating at 28,800 vibrations per hour, ensuring both precision and reliability during extended wear. The movement s flyback chronograph function adds operational versatility, allowing for immediate reset and restart of timing operations—a feature particularly valued by sailing enthusiasts and sports timing applications. The caliber s finishing reflects IWC s commitment to horological excellence, featuring perlage, côtes de Genève, and polished components visible through select variants. The 43.5mm stainless steel case strikes an ideal balance between presence and wearability, housing a striking blue dial that exemplifies IWC s mastery of color application and surface finishing. The unidirectional rotating bezel adds functional utility while enhancing the watch s sporting credentials, complemented by sapphire crystal protection and 60-meter water resistance suitable for recreational water activities. From a collectibility standpoint, the IW390507 occupies a compelling position within the modern IWC catalog, offering the desirability of an in-house chronograph movement within the revered Portugieser lineage at a more accessible tier than the collection s precious metal offerings. The reference appeals particularly to collectors seeking contemporary IWC pieces that maintain clear connections to the brand s historical design principles while incorporating modern manufacturing capabilities and sporty functionality.