30LS Flagship lume "T" missing

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Hi,

Thought to ask if anyone knows why these 30LS movement Flagships (from -59/-60) are missing the "T" or "T T" lume markings?

I have seen this in quite many of those models, so I'm finding it unlikely them all having wrong hands or being re-dials. Are they really using radium?

 
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Radium. Tritium wasn't widely used until several years later. Flagships can also have lumed hands and un-lumed dials.
 
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5
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3
Radium. Tritium wasn't widely used until several years later. Flagships can also have lumed hands and un-lumed dials.
Thanks for the info. Good to know.