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I know vintage dials can be a combination of "swiss", "swiss made" and various "T's", but that one ?
dash swiss made dash? Have such dials actually existed or it is simply a redial?
Thanks
To be clear, too: those are (I believe) onyx markers; that seems the most common way the chronometer-grade 166.010s came, from what I've seen (though I'm happy to be corrected).
To be clear, too: those are (I believe) onyx markers; that seems the most common way the chronometer-grade 166.010s came, from what I've seen (though I'm happy to be corrected).
It means late productions of 024. Black painted hour markers.
The way I always heard it, and I don't remember how/when/from whom, but it was probably here, was that Ts on both sides meant lume on the dial and hands, and - on both sides meant lume on either the hands or the dial but not both. That's one way how I know my 168.017 isn't right, it's got Ts on both sides but nary a scrap of lume anywhere.


The way I always heard it, and I don't remember how/when/from whom, but it was probably here, was that Ts on both sides meant lume on the dial and hands, and - on both sides meant lume on either the hands or the dial but not both. That's one way how I know my 168.017 isn't right, it's got Ts on both sides but nary a scrap of lume anywhere.
The way I always heard it, and I don't remember how/when/from whom, but it was probably here, was that Ts on both sides meant lume on the dial and hands, and - on both sides meant lume on either the hands or the dial but not both. That's one way how I know my 168.017 isn't right, it's got Ts on both sides but nary a scrap of lume anywhere.
Having one or two Ts is most likely a stylistic choice
I don’t like to spread misinformation so I did some sleuthing. On page 4 of Desmond’s essay about fake Constellation dials and cases, he states in an annotated graphic (and I paraphrase here) that no lume on the dial and hands negates the double T printing.
Troels isnt suggesting otherwise, just that omega would choose one or two Ts on a whim, it doesn’t signify anything particular. As you suggest, a watch with no lume at all should never have a T mark. But the reverse isn’t always true, a tritium lumed Omega might not have any T marks. They do like to keep collectors confused!