You might take a look at this one >>>>------->
https://www.timefactors.com/prs52.htm and this one >>>>------->
https://www.timefactors.com/prs68willard.htm as both are equipped with full coverage antimagnetic Faraday Cages.
Regarding all the comments in this thread about the original TF Precista PRS-14's screw-down crown, what always makes sense to me is using a good quality Rolex generic specification "TripLock" OysterCrown/Tube set for their maintainability and the universal availability of replacement parts for what will someday likely be a discontinued divers watch. The Rolex patents on this technologically beautiful screw-down crown&tube design, or system, have long since expired.