reintitan
2622
I think there is some confusion to my original post
The dark reddish lume and dark dial patina engraving is more famously known on the ref. 3646 Type C which is NOT reflected in the PAM 720 homage.
Photo credit: Perezscope
The 721 pretty much nails the ref. 3646 Type D (or Kampfschwimmer) dial (1st batch with "closed" loop 6 and 9).
Photo credit: Perezscope