It's the *direct* centre second of the ETA 2408 that is different from those watches. The direct centre second was invented by IWC in 1948.
Interesting but I cannot find a reference to this?
I'm not so sure. Can you post some pictures of similar dials from the 40s or 50s?
Vintage triple date watches are easy to find on-line, then of course there is the 1945 DateJust
It's very unlikely a new and small watch company could be so revolutionary but no one has heard about.
Probably yes
But with the same "control number"? Afaik, only fake watches have the same ID numbers...
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