AUDEMARS PIGUET Vintage Royal Oak Jumbo, Ref. 5402ST. Herren Armbanduhr. 48x39x7, AUDEMARS PIGUET Vintage Royal Oak Jumbo, Ref. 5402ST. Men's wrist watch. Stainless steel. Automatic movement, calibre 2121. Date ist not forwarding, time setting very difficult (problem with sliding pinion and/or time setting wheel). Movement in need of a service! Serial no. B-1610. Signs of wear on case and band. Box and papers enclsoed, bought 01/1977 at Juwelier Wempe in Stuttgart, Germany. Diameter ca. 39mm (measured without crown).