i bought an E serial sub in 1991, the lume was incredible,
in 1996 the watch needed a service and in the process of service the original dial was scratched. rolex replaced it with another tritium dial but it never glowed the same and it is now completely dead.
ps the watch never had any moisture inside and the crown was seldom opened as it was worn daily.
i suspect either the tritium quality control was varied or perhaps the tritium content was lessoned as the years passed by?
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