Perpetual Calendar: how does it work? The A. Lange & Söhne way 

In the art of watchmaking, the perpetual calendar is considered to be a particularly sophisticated complication and, for sure, it is one of the most appreciated by collectors and watch enthusiasts. This video explains how the perpetual calendar mechanism in a Lange 1 Tourbillon Perpetual Calendar by A. Lange & Söhne. Enjoy! You can read more about this timepiece at www.timeandwat...

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