Curious, Adding sapphire and Luminova to a vintage watch would ruin it. Would you replace the carburetors with fuel injection on a 60s Pontiac “Six Pack”? Would you put an automatic transmission in a 60s Shelby Cobra? Would you drop an electric motor in a Model A Ford? These old things are appreciated as throwbacks to earlier years precisely of their anachronistic parts and quirks. That’s why people search for years to find the right plastic crystal for their watch and happily pay hundreds of dollars for it. Newer is not always better.