Audemars Piguet Royal Oak "Skeleton" Tourbillon Chronograph Openworked 44mm Black Ceramic | 26343CE.OO.1247CE.01 Jumbo with a black printed seconds

with a black printed seconds track markers

Paramagnetic blue Parachrom hairspring

Brand Audemars Piguet Series Royal Oak Frosted Gold Model Number 15454BC

easy to read

IWC Schaffhausen: Ingenieur Chronograph Flyback Ref# IW3796-03

Audemars Piguet Royal Oak "Skeleton" Tourbillon Chronograph Openworked 44mm Black Ceramic | 26343CE.OO.1247CE.01 Jumbo with a black printed secondsBRAND Audemars Piguet SERIES Royal Oak Tourbillon Chronograph Openworked MODEL NUMBER 26343CE. OO. 1247CE. 01 MODEL YEAR 2017 2022 PRODUCTION YEAR Call for Enquiry CONDITION Call for Enquiry BOX PAPERS Box & Papers CASE MATERIAL Ceramic CASE SIZE 44 mm CASE SHAPE Octagonal CASE BACK Transparent CROWNS Screw Down BEZEL Ceramic MOVEMENT Manual Wind DIAL COLORS Skeleton DIAL TYPE Analog DATE At 3 o'clock BAND MATERIAL Ceramic CLASP AP Folding Clasp