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Jaeger-LeCoultre

AM/PM indicator

 

The small hour hand function is actually an AM/PM indicator, due to the skeleton hometime hand works in 12 hour system unlike many GMT watches that use 24 hour system. I do feel it's a bit redundant but it's so difficult to see the exact time using the upper sub-dial so I see it as an un-lazy watchmaking. 

The skeleton hand can be set under the main hour hand and it this case the small hour hand will be an AM/PM indicator for the main hour hand.

RK 

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