Bear in mind, time to produce anything on a production line is a misleading question and answer. They build many parts at the same time, assemble as parts are available, and some take more time than others. They don't build watches one at a time, so actual time from raw material to finished product is misleadingly long, whatever the answer. I can believe that a Patek complicated watch might take as long as a year, but a Rolex? No way.
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