IWC's Mark series first https://www.rolexrelogios.to/produkt-kategori/air-king/ came on the scene not long after WWII with the https://www.replicarolexorologi.co/categoria-prodotto/gmt-master/ Mark 11 which was issued to the British Ministry of Defense as a pilot's watch. A handful of iterations were released since then with the https://www.replicarolexit.to/categoria-prodotto/deepsea/ most recent Mark XX replacing the now discontinued Mark XVIII (Yes, we're oddly missing the XIX here, but I'll save my comments on that for the video).