from time to time i wear my late father's hand wound iwc from the fifties. i intend to buy a jlc, i've seen a nice master control 140 84 20 and a reverso grand taille 270 84 10. which one is more reliable in the long term?
I have both of them and they all are perfect and reliable. No problems and they keep time very good. But keep in mind that they are not sporty watches so I do not wear them for "dangerous" activities