Why aren't we looking for a suitable European replacement crystal that mimics the look of the original domed 19's and 39's... that exhibit the same or better quality control in manufacture as the originals...
The problem seems to be in the age...not in the design.
Heck why doesn't some entrepreneur approach one of the crystal manufacturers about a proper repro...or do they already exist and because we are superstitious....about it not being a "Rolex" branded crystal that they did not manufacture anyway...we don't go there.