Valuation · updated July 2026 · live listings + documented auction results
How much is a Longines Wittnauer Sidereal (Amy Johnson's Watch) worth?
As of July 2026, the Longines Wittnauer Sidereal (Amy Johnson's Watch) 38330 has 1 documented auction result; the record is $119,070 (Sotheby's London, 2022); 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. Cite as “MostExpensiveWatches Valuation”.