Audemars Piguet, Cobra, Ref. 5403BC, n° 614xx, circa 1970. A superb and rare dress watch in white gold, radiant blue dial, diamond hour markers, gold hands, date at 3 o'clock. Screw-down caseback, mechanical self-winding movement, extra-flat for its time, caliber 2121. Superb integrated white gold bracelet with twisted rope decoration, 3-position adjustable buckle. A few minor imperfections on the dial, in excellent overall condition and working order, with hallmarks and numbers still in excellent relief, exceptionally long bracelet. Delivered with a certificate of authenticity. Nicknamed "Cobra" by collectors, this Audemars Piguet Ref. 5403 is the dressed counterpart of the Royal Oak Ref. 5402, both powered by the same caliber 2121. The wide interlaced rope finish is spectacular, with the watch case appearing more integrated than ever with the bracelet. Diam 35 mm - B.P. 147.7x g. - Total length 21.4 cm - Wrist circumference 18.50/19.50 cm A stunning and rare white gold dress wristwatch, blue sunburst dial, diamond-set indexes, white gold hands and date at 3. Screw-back, automatic winding movement caliber extra plat caliber 2121. Integrated long & heavy white gold band with ajustable 3 position buckle. Some small imperfections on the dial, in excellent general and working condition, the hallmarks and numbers having retained excellent relief, exceptionally long bracelet. Delivered with an authenticity certificate from Audemars Piguet. Nicknamed the 'Cobra' by collectors, this Audemars Piguet reference 5403 is the dressier sibling of the Royal Oak Ref. 5402 and is powered by the same movement, Caliber 2121. The wide interlaced rope finish is spectacular, the watch case seems more than ever integrated into the bracelet.