Pre-Owned Portugieser Perpetual Calendar Rose Gold (IW503202)

This pre-owned IWC Portugieser Perpetual Calendar Ref. IW503202 combines a fully integrated perpetual calendar with a double moon phase display, housed in a substantial 44.2mm case of 18K 5N gold. Descended from the Portugieser line first conceived in the 1930s for clients who demanded marine-chronometer precision on land, this reference stands among IWC's most complete statements of in-house watchmaking.

• Perpetual Calendar: Tracks the date, day, month, and four-digit year through a fully integrated perpetual calendar mechanism, mechanically accounting for varying month lengths and leap years without manual correction.
• Double Moon Phase & Power Reserve: A double moon phase display tracks lunar cycles for both the Northern and Southern Hemispheres, paired with a power reserve indicator showing the movement's remaining charge at a glance.
• Case & Strap: 18K 5N rose gold case measuring 44.2mm in diameter and 15.5mm thick, fitted with the IWC dark brown alligator leather strap secured by the IWC 18K rose gold folding clasp.
• Dial: Black dial hosting the full perpetual calendar and double moon phase display suite in the balanced, symmetrical layout characteristic of the Portugieser line.
• Calibre 51614: IWC's in-house automatic movement, built from 420 components and 62 jewels, oscillating at 21,600 vph (3Hz) and delivering a 168-hour (7-day) power reserve, visible through the sapphire exhibition caseback.
• IWC Box Only: Sold complete with an IWC presentation box; full papers are not included with this piece.
• Excellent Condition: Movement running well with case and strap in excellent condition (9/10).