IWC Portugieser Perpetual Calendar 'Rose Gold' (Ref. IW502306) - New/Unworn

An exceptional and highly prestigious 18K rose gold automatic perpetual calendar wristwatch with a 7-day power reserve, featuring an elegant silver-plated dial. Presented in brand-new, unworn condition as a complete full set. 

Renowned as one of the ultimate expressions of mechanical complexity and horological mastery, the Reference IW502306 showcases IWC’s legendary grand complication. At the heart of this masterpiece beats the spectacular in-house Calibre 51613 automatic movement, boasting an incredible 168-hour (7-day) power reserve monitored by a dedicated sub-dial indicator. The timepiece utilizes the iconic, highly synchronized perpetual calendar system pioneered by Kurt Klaus, seamlessly adjusting for months of different lengths and leap years through a mechanical program that functions effortlessly via a single crown. 

This specific lot is defined by its immaculate silver-plated dial, beautifully balanced with applied rose gold Arabic numerals and delicate feuille hands. The sophisticated layout integrates four sub-dials displaying the date, day, month, moon phase, and small hacking seconds—complemented by a rare, full four-digit year aperture between 7 and 8 o’clock. Enclosed in a commanding yet elegant 44.2mm 18K rose gold case with a sapphire crystal display back, the watch reveals its exquisitely finished movement and solid 18K gold rotor. The watch is fitted to its original dark brown alligator leather strap and secured by an 18K rose gold folding deployment buckle. 

A definitive statement piece for connoisseurs of high horology, representing the perfect pinnacle of traditional watchmaking and mechanical innovation. Offered at Maynard Auctions in pristine, unworn condition accompanied by its original box and papers. 

• Model: Portugieser Perpetual Calendar
• Reference: IW502306
• Case Material: 18K Rose Gold (5N Gold)
• Case Diameter: 44.2mm
• Dial: Silver-plated with Rose Gold Accents & Applied Arabic Numerals
• Movement: Automatic, IWC-manufactured Calibre 51613
• Power Reserve: 168 Hours (7 Days)
• Functions: Perpetual Calendar (Date, Day, Month, 4-digit Year, Moon Phase), Power Reserve Display, Small Hacking Seconds
• Bracelet: Dark Brown Alligator Leather Strap with 18K Rose Gold Folding Clasp
• Glass: Double Box-Glass Sapphire Crystal with Antireflective Coating
• Condition: Brand New / Unworn
• Accompaniments: Full Set (Original Box, Stamped Warranty Certificate, Manuals)