I have this Piguet for some years and remembered that, when I bought it, the AD (in Geneve) told me it used the same caliber (cal. K2120) of a Vacheron (I can't remember wich Vacheron right now). Can anyone tell me if this information is correct? I have this doubt because when I bought it, I wanted, in fact, a Vacheron, which the AD didn't have. So, maybe, arguing that this Piguet had the same caliber of a Vacheron was merely a sale's strategy. Anyway, it's a nice watch.