An Audemars Piguet Royal oak chronograph wristwatch, automatic movement, circular black dial with batons, subsidiary dials, signed case, dial and movement, octagonal stainless steel case and conforming bands, reference number 25860ST/O/1110ST/01, movement number 469607, calibre 2385, case reference number D-99342, number 537, diameter 40 mm, boxed with papers.