Valuation · updated July 2026 · live listings + documented auction results
How much is a Patek Philippe Perpetual Calendar Split-Seconds Chronograph worth?
As of July 2026, the Patek Philippe Perpetual Calendar Split-Seconds Chronograph 5004A has 1 documented auction result; the record is $950,000 (Phillips New York, 2024); the Patek Philippe cohort on the MEW Price Index is -0.00% since tracking began (2026-05-30); no live-listing sample currently meets our minimum for a market band.
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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”.