Fascinating!Cant help here
But something you might find useful in creating a Sub build
Post in thread 'The Rolex Submariner Story 264 page Book PDF Download' https://forum.replica-watch.info/th...64-page-book-pdf-download.137975/post-8623542
pretty sure 1a is maxi so only for the LVyes, flat 4 insert would be correct. One of our resident vintage gurus like @tripdog probably can help more on the hands. I believe your A series (thicker) hands are correct for the older tritum based subs, but I am not an expert in vintage Rolex.
The Korean case has lug holesgoing down the same road, have two t25 dials.
still trying to find a second case with lug holes and some tritium hands.