This is the only watch which I bought...
Its a Vacheron Constantin, Patrimony Extra-Plates Small Dial. It got a Quartz Movement with an all Vacheron Calibre 1202. To the best of my knowledge Patrimony is a 100% in-house production. Frequency is 32,768 Hz.
@Qaisarani, Is this Jurgensen pre 1957 or post 1957 model. Kindly post a close-up of dial. Pre 57 Larpents were true masterpieces. So ya are more of a diving guy playing with Helium Valve. Yachtmaster Submariner all thats left is a Sea Dweller...

Thnxx..