1999 pre-owned Royal Oak 37mm from Audemars Piguet featuring midnight blue, yellow gold, octagonal face, automatic movement, alligator leather strap, pin-buckle fastening, index dial, baton hands, sweeping second hand, calendar day-date and screw-down crown. 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..