Evening,

I've been looking at a fair few vintage watches recently (on the dress side), ranging from 1940 to the late 60s. One thing I've noticed is that some dials have 'Swiss' or 'Swiss Made' on the dial, whereas others, often similar models from the same period, do not have the text present. I understand it became compulsory under Swiss law in 1970/71 to have these markings on Swiss watches (provided they comply with various requirements) but before this period, are there any hard and fast rules on when this text would appear?

I've read on other sites/forums that the lack of Swiss could signify a re-dial, is this always the case?

Cheers.