Chronograph Tasti Tondi 1463

Patek’s mid-century sports chronographChronographA watch function for starting, stopping and resetting an elapsed-time measurement independently of the ordinary time display., nicknamed for its round “onion” pushers. At 35 mm larger than the 33 mm standard, and the first Patek chronographChronographA watch function for starting, stopping and resetting an elapsed-time measurement independently of the ordinary time display. with a screw-down back, making it water-resistantA watch’s ability to resist water entering its case under specified conditions, often stated as a pressure or equivalent depth. Seals can deteriorate and the crown can be damaged, so an original rating does not establish a vintage watch’s present resistance.. The last -only Patek before the 5070.