The PortugueseNew IWC Portugieser Eternal Calendar IW505701 44MM White Platinum Box PapersPortugieser Eternal Calendar (Reference IW505701) is a Platinum cased luxury wristwatch by IWC introduced in 2025. The case measures 44 mmmm with a White dial.

On TheWatchInfo, the PortugueseNew IWC Portugieser Eternal Calendar IW505701 44MM White Platinum Box PapersPortugieser Eternal Calendar is tracked across the secondary market in real time. There are currently 1 active listing with an average asking price of $118,500. Listings are sourced from Dealer. Price history, trend analysis, and condition breakdowns are available on this page.

IWC watches are among the most actively traded on the pre-owned market. The PortugueseNew IWC Portugieser Eternal Calendar IW505701 44MM White Platinum Box PapersPortugieser Eternal Calendar Ref. IW505701 is sought after by collectors for its platinum case construction and white dial. Buyers and sellers use TheWatchInfo to track real-time price movements, compare listings across platforms, and understand fair market value before transacting.

When purchasing a pre-owned PortugueseNew IWC Portugieser Eternal Calendar IW505701 44MM White Platinum Box PapersPortugieser Eternal Calendar Ref. IW505701, key factors to consider include the condition grade (unworn, mint, excellent, good), presence of original box and papers, service history, and whether the watch has been modified. Prices for examples with full box and papers typically command a 10–20% premium over card-only or watch-only examples. Use the listings and price history on this page to benchmark what a fair price looks like right now.