What needs to be clarified
Examine case, crystal, crown and seals, test sealing by a model-appropriate method and evaluate technical explanations for internal moisture from preserved evidence.
Materials to prepare
- Watch with crown position preserved and fogging photographs
- Instructions specifying water resistance and use limitations
- Battery-change, servicing and moisture-appearance records
What to compare
Inspect case and crystal, recording damage and control positions before intervention. Select a suitable seal test rather than domestic immersion to reproduce symptoms. If opening is agreed, document seals, seating surfaces and moisture. Compare servicing history, separating current leakage from when it developed.
Possible outcome of the analysis
The opinion may describe identified leak paths or insufficient evidence, provide a test record and identify information needed to assess a possible servicing connection.
Limits of the conclusions
Condensation does not automatically identify responsibility or water-entry date. Passing a current test cannot reconstruct past conditions; undocumented opening can change seal positions and moisture evidence.