IWC Portugieser Perpetual Calendar 18-Carat Armor Gold 44.4mm Silver Plated Dial IW503701 - BRAND NEW

The IWC Portugieser Perpetual Calendar IW503701 represents one of the most revered intersections of classical watchmaking and precious-metal craftsmanship in the modern catalogue. The Portugieser line traces its roots to 1939, when IWC produced a series of oversized, highly accurate pocket-watch-movement wristwatches for two Portuguese merchants — giving birth to a silhouette defined by a large, clean dial, slender bezel, and elegant Arabic numeral indices that remain hallmarks of the family to this day.

Reference IW503701 takes that storied heritage and elevates it through the choice of 18-carat Armour Gold for the 44.4mm case and matching bezel. Armour Gold is IWC's proprietary alloy engineered for enhanced scratch resistance compared to conventional gold, meaning the warm, rich luster of the case holds its appearance far better over years of wear — an important consideration for a watch intended to be treasured and passed down.

The silver plated dial is appointed with bold, classical Arabic numerals in the grand tradition of the Portugieser, providing exceptional legibility across the multiple perpetual-calendar displays. The dial architecture balances the complexity of a perpetual calendar — tracking date, day, month, and leap-year cycle without requiring manual correction until 2100 — with the visual restraint that makes the Portugieser so compelling. A supple leather strap completes the ensemble, offering a dressy, lightweight wearing experience well suited to the watch's formal character.

Powering the IW503701 is an automatic movement, allowing the perpetual calendar's sophisticated mechanical logic to wind itself through the natural motion of the wrist. IWC's perpetual-calendar mechanisms are engineered to the highest tolerances, reflecting the brand's long history of grand-complication development in Schaffhausen, Switzerland. The result is a complication that functions with effortless reliability in daily life.

On the wrist, the 44.4mm gold case commands presence without ostentation — generous enough to make every dial feature immediately readable, yet shaped with the Portugieser's characteristic thinness and elegant proportions so it settles comfortably beneath a shirt cuff. Whether worn to a formal occasion or simply as a daily expression of connoisseurship, this reference occupies a rare position: a true grand complication in precious metal that is equally wearable and investable.

Bizak & Co. is pleased to offer this IWC Portugieser Perpetual Calendar IW503701 brand new, complete with box and papers, at the best price available online. Our team of specialist watch dealers is on hand to answer any questions, arrange secure shipping anywhere in the United States, and ensure every detail of your purchase meets the standard you expect when acquiring a timepiece of this caliber. Reach out today to buy IW503701 with confidence.