I remember back in the days, I was not even aware of the existence of submariners . Just à Panerai guy. Then over lurking some forums for years, talking to people, reading hours and hours.. Took some YouTube and DIY watchmaking class.. 10 years after I'm building passionately Franken subs and GMTs.. Some guy at work trying to (nicely) impress, asked me about my gen 16600 : "Oh, did you know that your Rolex watch is made from a special steel?" And we discussed about 316, 905 etc for 2 hours. And Switzerland trips just to approach the holy grail. Crazy world of Rolex technical aficionados