Has the font changed over time for the text "Schaffhausen" on some of the models?
I was looking at a IW3714-46 at a shop in detail and I noticed that the Schaffhausen text on the face was in serif font while the image on the USA site shows it in a san serif font.
Then the image on the IWC site (Chinese) shows it in serif font.
Is that a detail that distinguishes production date of the watch?