Audemars Piguet, 18K Yellow Gold Ref. 25644 'Huitieme' Chronograph Wristwatch40.00 mm case diameter, matte silvered dial signed AUDEMARS PIGUET, applied gold index numerals with outer tachymeter ring calibrated to 500 units, gold pencil hands with chronograph seconds hand, subdials at 6, 9 and 12 o'clock for chronograph hours, minutes and seconds respectively, date aperture at 3 o'clock, pushers in bezel at 2 and 4 o'clock, snap on case back, Cal. 2126 51 jewel self-winding nickel movement adjusted to heat, cold, isochronism and five positions with a yellow gold 21c rotor signed AUDEMARS PIGUET, brown strap signed AUDEMARS PIGUET, 18 karat yellow gold deployant buckle signed AUDEMARS PIGUET.Inner case back stamp: AUDEMARS PIGUET SWISS MADE 750.Case back stamp: C83056 750.Movement number: 340272.Provenance: Property from a Private Collection, Naples, Florida