The new blue hue of the Audemars Piguet Royal Oak Perpetual Calendar The Grande Tapisserie plaid dial reproduces the iconic blue hue of the original Royal Oak. With nearly 50 years of history, Royal Oak is more than just a highly sought after watch. It has evolved into a complete series, built around iconic designs, showing most of Audemars Piguet’s watchmaking skills. Without a doubt, one of AP’s most iconic complications is the perpetual calendar. Therefore, RO has long been equipped with this sophisticated calendar function, and many versions have been produced. Today, the brand has added a new color to its collection, the new blue hue pays homage to…