of course the dial is one of a kind custom made but imho you are looking at the least important detail of that dial.
This watch displays the date with a crescent-tipped blued hand pointing to a 1 -through-31 scale printed around the dial’s circumference
a bit in the way as on a 4768 except that on my 4768 that hand ends with a black arrow and not a red crescent.
And that date display is the most puzzling detail on that watch. But what about small seconds at 6' like on BB's?