Audemars Piguet Case Octagonal stainlees steel case, with a solid stainless steel caseback with personal engravings TWH 27.04.78 Bracelet Integrated stainless steel bracelet Dial Dark blue Tapisserie dial, with applied tritium indices & tritium hands. date indication at 3 o'clock Movement Rhodium-plated automatic movement, with Geneva stripes Cal. 2121/1 Ref. 5402ST Case No. A1*** D= 39mm Year 1978