Royal Oak, Reference 15400ST.OO.1220ST.02 | A stainless steel wristwatch with date and bracelet | Circa 2015 Audemars Piguet Royal Oak, Reference 15400ST.OO.1220ST.02 A stainless steel wristwatch with date and bracelet Circa 2015 Dial: silvered tapisserie Calibre: cal. 3120 automatic, 20 jewels Movement number: 918'160 Case: stainless steel, sapphire crystal display case back secured by 8 screws Case number: I52'918, 8'820 Closure: stainless steel Audemars Piguet bracelet and double-folding clasp Size: 41 mm diameter, bracelet circumference approximately 190 mm Signed: case, dial and movement Box: no Papers: no Accessories: none