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Some specifications for this reference are on file; the record is incomplete.

IWC · Pilot's Watches

Pilot's Watch Mark XX

Ref. 6B/346

Also written: Mark XI

discontinuedMilitary Mark XIPartially documentedEvidenceProbableLast reviewed Not yet reviewed
Lineage6B/346IW328201 →Compare with next

Component compatibility

What this reference is documented to have carried, and in what capacity. A service part is the manufacturer's own work; only a counterfeit classification is a finding against the watch.

Documented calibers

  • IWC 89FactoryDefault configurationProbable

    Whole production

    Hacking seconds is the functional test and the reason the watch met the navigation specification: pulling the crown must stop the seconds hand dead.

Components

  • CaseSoft-iron inner cageFactoryDefault configurationProbable

    Whole production

    The cage is why the watch met the Air Ministry's specification. A Mark XI with a display back has been modified and has lost the property it was issued for.