Patek's history in complicated watch-making is truely the stuff of legend with their perpetual calendar chronographs at the absolute forefront. The 3970 was the grand complication that replaced the iconic ref.2499 and this 3rd series example would have been amognst the last ever made and comes remarkably complete with its original box, certificate of origin, stylus, instructions and the famous additional case back in solid 18ct gold. Fitted to a brown Patek alligator strap with solid yellow gold folding clasp, this is one of Patek's most beautifully refined grand complications and tipped as a solid investent in the coming years...