RE: [Demo notebook] Collector’s comparison desk: dimensions, fit and documented differences · RWI-12774
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August 5, 2021 at 12:17 am
#101113
CaliberReader 07972
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Case 24 — 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.