2018 pre-owned Royal Oak Extra-Thin 39mm from Audemars Piguet featuring blue, yellow gold, octagonal face, automatic movement, adjustable link bracelet, clasp fastening, signature Grande Tapisserie dial, index dial, baton hands, date indication and skeleton case back. Original box, papers and WatchBox certificate.. This item comes with a standard two-year warranty from WatchBox.. This watch has been evaluated and authenticated by a WatchBox in-house Swiss-trained watchmaker..