Ca. Ø51.5mm, ca. 106g, 18K pink gold à-goutte case, very rare case shape as seen on Patek Philippe pocket watches with multiple complications, case number 207072, dome signed Patek Philippe and Du Bois Rio de Janeiro, movement number 80874, signed and numbered Patek Philippe Ankerchronometer movement of very rare quality, calibre Chronometro Gondolo in nickel-plated design, special fine adjusting device, wolf's toothing, very early crown-pusher chronograph, signed enamel dial with chronograph register, pink gold hands, in very beautiful condition, in working order. This watch is an extremely rare Patek Philippe chronograph. It belongs to the 1st series for the South American market, using the 'Gondolo' chronometer calibre, although this watch was not made for the usual recipient Gondolo & Labourian, Rio de Janeiro, but for the Dubois company in Rio! Patek Philippe pocket watches with complications and movements in chronometer quality are rarities!