I have a 1968 one owner Father/son watch with original box, tags, double booklets on original 9315 bracelet with divers extention, and receipt of service by authotized dealer in St Petersburg Fl. Watch is 100% original with only the crystal, and crown tube changed at the service in 2000. The watch has not been open since the service but a 263xxx serial number puts it around that date of 1968. Dial is MK IV, and matches the hands like it should. Sell for 9875.00 USD + freight