A blend of Rolex / Tudor Submariner for the dial ( at the exception of the horizontal index at 6 ) the insert and for the crownguard. As for the hands, the inspiration is clearly taken from
Massena LAB have just launched the U1-ML6. The watch has been designed as a classic dive watch from the 1950s and is depth rated at 300m and uses a Seiko NH35A movement. The case is 41.5mm. The interesting part is that the lume has been applied by hand on...
It is what seems to be the "puffiness" to match aged lume. As you said, though, interesting project and I did seriously consider it when I got the email.