AUDEMARS PIGUET REF. 5402, ROYAL OAK, DIAMOND INDEXES, 18K WHITE GOLD | Forte dei Marmi Auction | Forte dei Marmi AUDEMARS PIGUETREF. 5402, ROYAL OAK, DIAMOND INDEXES, 18K WHITE GOLD, An exceptional self-winding 18K white gold extremely rare wristwatch with diamond indexes number 142.