At SIHH 2014 Vacheron Constantin unveiled a pair of new open-worked tourbillons - the Malte Tourbillon Openworked and the Patrimony Traditionnelle 14-Day Tourbillon Openworked - bringing what was once a signature complication of the brand back into its line-up. http://www.watchesbysjx.com/2014/05/hands-on-with-new-vacheron-constantin.html

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