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Introducing: The IWC Big Pilot’s Watch Perpetual Calendar ProSet Introduces A New Smaller, Reversible Perpetual Calendar Caliber (Live Pics)

Building off of Kurt Klaus' original design, this new generation movement allows crown adjustment of the calendar both forwards and in reverse.

Introducing: The IWC Big Pilot’s Watch Perpetual Calendar ProSet Introduces A New Smaller, Reversible Perpetual Calendar Caliber (Live Pics)
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