This watch I inherited from my father , I used to sneak into my parents bedroom when I was 7 or 8 and wear my dad's Patek Philippes ! I've ALWAYS been OCD about watches! My father owned three this is one I got !
My father owned three, probably received them for graduations. Platinum Top Hat, plain dial , ref 2450, also a very nice 18k ref 2456 ( scalloped case ), and of course the stainless one in OP .