Good eye. I glanced at it and did not notice that.
I have dealt with many dealers and can tell you that collectors generally know more, far more, about the watches than the dealer. They are selling all sorts of watches usually do not spend the time on the details like we do when focused on a brand and model. Might they also be dishonest? Sure, but I think in most cases they just don't know.
same "good" supply Often the AG used bezels are in more bad condition than the Jet Graph ones.
Btw interesting is the Serial: I read 1.621.835 . Thats as far as I know the latest batch of ever produced AGs and JGs (they shared the cases).