Audemars Piguet Quantieme Perpetual Calendar Yellow and White Gold Octagonal Case with Archive Extract Ref 5557CAThis is a stunning Audemars Piguet Perpetual Calendar in white and yellow 18k gold in an iconic octagonal case. We understand that Audemars Piguet considers this watch as part of its prestigious Royal Oak lineage, a detail confirmed in the extract from the archives! The watch houses a light satin finished grey dial accented by champagne colored sub dials that display the day, month, leap year, and date, while the moonphase indicator sits at 6 oclock.