Valuation · updated August 2026 · live listings + documented auction results
How much is a Patek Philippe Nautilus Moon Phase worth?
As of August 2026, a Patek Philippe Nautilus Moon Phase 5712 lists at a median $150,000 (range $144,500–$295,000 across 3 live listings from 1 merchants); the documented auction record is $97,000 (Bonhams London, 2023); the Patek Philippe cohort on the MEW Price Index is +0.01% since tracking began (2026-05-30).
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How this valuation works
The live band is computed from in-stock listings matched to this reference across our tracked merchants (asking prices, not offers). The auction band is from documented, primary-sourced results in the Record Ledger corpus. The trend is the brand cohort's movement on the repeat-listing Price Index — tracked since 2026-05-30, honestly labeled, never extrapolated. Cite as “MostExpensiveWatches Valuation”.