Also, the motion has a serial range but it is not preceded by a "D" as are each of the chrono movements I've observed and what could be the importance with the initials "ROW" stamped to the plate? Proprietari Se sei già abbonato alla rivista della Patek Philippe e desideri https://juliusgmopr.madmouseblog.com/15364636/patek-philippe-can-be-fun-for-anyone