Yes 100% would have been tritium originally. Omega didn't use Superluminova until 1998. Thereafter they used nothing else. Many '80s and '90s models such as the Pre-Bond and 2531.80 SMP used tritium but had no T marks. Presumably it was no longer legally required so on some designs they dropped it.
Thanks, thought so. Another question, I’m assuming the new hands are superluminova but they don’t really grow much even under UV. Does it lose, potency or whatever over time?
