Valuation · updated July 2026 · live listings + documented auction results
How much is a Blancpain Fifty Fathoms 70th Anniversary Act 1 Only Watch worth?
As of July 2026, the Blancpain Fifty Fathoms 70th Anniversary Act 1 Only Watch 5010 has 1 documented auction result; the record is $45,000 (Christie's Geneva, 2024); no live-listing sample currently meets our minimum for a market band.
Full Fifty Fathoms 70th Anniversary Act 1 Only Watch dossier Set a price alert All valuations
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. Cite as “MostExpensiveWatches Valuation”.