Pre-Owned Portugieser Perpetual Calendar (IW503701)

Discover the pinnacle of horological ingenuity in the IWC Portugieser Perpetual Calendar IW503701, a 44mm timepiece in 18K Armor Gold® that features Kurt Klaus's iconic perpetual calendar complication, displaying day, date, month, four-digit year, and a highly accurate double moon phase.

• Armor Gold® Case: 44.4mm case crafted from 18K Armor Gold®, a proprietary alloy significantly more wear-resistant than traditional 5N gold.

• Silver Dial: Silver-plated dial with gold-applied Arabic numerals, protected by a double box-glass sapphire crystal with anti-reflective coating on both sides.

• Automatic Movement: A self-winding Calibre 52616 movement featuring 386 components and a solid gold oscillating mass visible through a sapphire glass back. Dual barrels provide a substantial 168-hour power reserve, monitored by an indicator at the 3 o’clock position.

• Perpetual Calendar: Features synchronized displays for the date, day, month, and year in four digits, all adjustable via the crown.

• Double Moon Display: A high-precision moon phase indicator that shows the moon's position in both the Northern and Southern hemispheres with a deviation of just one day in 577.7 years.

• Strap & Clasp: Outfitted with a dark brown alligator leather strap by Santoni, featuring an 18K Armor Gold® folding clasp.

• Full Set: Accompanied by the IWC watch box, instruction booklet, and warranty card dated March 2025.

• Excellent Condition: Movement running within IWC specifications with case and strap in excellent condition (9.5/10).