Audemars Piguet Royal Oak Offshore Chronograph 26187ST. 01 “Montauk Highway” White Dial Limited 300pcs PreOwned. Royal Oak Offshore Chronograph. Box, Papers were misplaced we will include a certified appraisal with the matching serial number. Diamonds East Intl Boca Raton Fl. 4251 North Federal Highway 33431. Central seconds, Small seconds, Luminous numerals, Luminous hands, Limited Edition, Screw-Down Crown.