Question about bezel on 1680 i want to buy

[Danny4]

Hi all,

I have a question and i hope someone can help me :)

I'm planning on buying this, in my opinion gorgeous, 1680 from 1979.
But this bezel stuff has got me puzzled. Fat font, lesser fat font, thin font etc. I've been looking up a lot of info including pics but i still struggle to pinpoint what bezel this watch has.

My guess is that it has a MK3 bezel which should be correct for this model but can anyone confirm this or correct me?