This one, urhm, my very first branded watch >
back from 1978! and... I still have it too! Actually one year ago, I got it fully serviced, it is impeccable. The good news about those Cartier Santos till 1984 is that they carry a 'Life Time Guarantie' against all mechanical defects, Yes you heard and it has so far been honoured, even if at times one need to insist!
That's a sentimental piece for me!