Hello guys! I purchased a Vintage IWC with very little information in the add. What I have found out myself after receving the watch, is that it is a Ref. 500 according to iwc forum and Runs on a cal 401. my concern is the big age difference. Can anyone help me? is it a franken or something? Movement #: 1,782,161 made in 1965 Case #: 1,335,904 delivered in 1955
The case and movement numbers should not be so far apart. It's not unusual for them to be separated by a year or two, and I have heard some IWC collectors say that the gap can be as much as 4 years for certain models, especially in the 1960s. However, 10 years apart is too much. So assuming that you have the numbers correct, the watch is not all original.