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Patek Philippe

the pr indicator is one interesting thing here: 25% pr for assuring full function

 

Your first annual calendar watch from Patek displayed this matter on the dial: for a long jump from 30th to a 1rst of a month it needs the power of twelve hours, hence the red markings.

That is 1/4th of the power when fully wound.

Great piece.


Best

Moritz




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