Royal Oak 'B-Series Jumbo', Reference 5402ST | A stainless steel wristwatch with date and bracelet | Circa 1975 Audemars Piguet Royal Oak 'B-Series Jumbo', Reference 5402ST A stainless steel wristwatch with date and bracelet Circa 1975 Dial: black tapisserie Calibre: cal. 2121 automatic, 36 jewels Movement number: 158'308 Case: stainless steel, case back secured by 8 screws Case number: B1'600, 99'600 Closure: stainless steel Audemars Piguet bracelet and folding clasp Size: 39 mm diameter, bracelet circumference approximately 185 mm Signed: case, dial and movement Box: no Papers: no Accessories: Audemars Piguet Certificate of Authenticity and service box
