A fine gold perpetual calendar automatic bracelet watch with moonphases, Audemars Piguet, Royal Oak, no.23, circa 1998

18k, nickel lever movement, 33 jewels, mono-metallic balance, gold rimmed rotor, blue hobnail pattern dial, applied luminous baton numerals, subsidiary dials for year and month indication, day and date, aperture for moonphases, octagonal screwed down bezel, water resistant type case with screw down crown, sapphire glazed back, integral 18k tapering bracelet with flip lock clasp, case, dial, movement and bracelet signed.