So the opinion is that the dial left Heuer in -62 with the T-mark and that his dial, with this marking would still be accepted in a '62 case? This is what throws me off but if this is accepted for Heuers I guess there's more clarity now. :)

Or it had the T added later by Heuer at service while relumed with tritium? I can't imagine Heuer doing such sloppy relume as it now has but of course it could have been relumed more times over the years. I weren't aware of other similar cases as Paolo mentions so I guess its not likely this dial was new, with a T added, when it first was assembled later in the 60's?

Thanks guys. Appreciate the feedback. :)