Do they exist? Or are they a forgers make believe?

I am currently sitting on a plane and the chap next to me has a grey dial Milgauss with light / faded orange second hand, it has a clear (non green) crystal.

Looks to have seems a bit of action, it’s definitely not been babied.

Using my google-fu it seems it would be a faded / ‘tropical’ dial. Grey was not a factory option as I understand it?

I am guessing it was originally a black dial example and not the blue?

So are they really rare and this chap (a nicely dressed Italian in business class) has a watch I am lucky to have seen, or is it likely to be as genuine as a trumpian attempt at bringing manufacturing back to the good ol’’ us of a.