Audemars Piguet. A Rare Stainless Steel Wristwatch with Date and BraceletSigned Audemars Piguet, Royal Oak, Ref. 5402, No. A1874, Movement No. 146'160, Case No. 80'874, Circa 1973Cal. 2121 automatic jewelled movement, hobnail blue dial, applied luminous baton numerals, luminous hands, outer minute divisions, aperture for date, tonneau-shaped water-resistant-type case, octagonal screwed bezel, octagonal case back secured by eight screws, stainless steel Audemars Piguet link bracelet and deployant clasp, case, dial, and movement signed39mm diam.