IWC IW503501 Portugieser Annual Calendar SS Silver Dial

The IWC Portugieser Annual Calendar IW503501 is a prominent example of the brand's technical prowess and sophisticated design, introduced in 2016. Crafted in a robust 44.2mm stainless steel case with a commanding 52.4mm lug-to-lug span and 15.3mm thickness, the watch asserts presence on the wrist while remaining refined. Its silver-plated dial, marked by stylized Arabic numerals and leaf hands, elegantly displays a rare annual calendar complication, granting clear month, date, and day indications through three beautifully arched apertures at 12 o'clock—requiring adjustment only once a year. The automatic movement within, part of IWC's high-caliber in-house manufacturing, assures reliable performance and highlights the watchmaker's dedication to innovation. Collectors prize this reference for harmonizing the celebrated aesthetics of the Portugieser line with a technically advanced, yet practical, complication. The sapphire display back allows a glance into the intricate movement finishing, reinforcing the piece's luxury credentials. As an annual calendar in steel with classic proportions, the IW503501 sits distinct in modern horology, offering everyday usability alongside collector-level mechanical interest. Its stature in the Portugieser lineage and the complexity of its calendar make it a compelling addition for discerning enthusiasts. Iconic for its clarity, elegance, and mechanical sophistication, this reference remains a notable achievement in the IWC catalog. Like New with IWC box and papers dated 2015.