RE: [Demo notebook] Collector’s comparison desk: dimensions, fit and documented differences · RWI-05530
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August 2, 2019 at 2:18 am
#44928
QCNotebook 01787
Participant
Case 32 — What a water-resistance claim does and does not establish
Ask a qualified watchmaker about a suitable test for that individual case and record the test date and method. A photograph or a caseback engraving is not proof of water resistance.