Good question. I looked up a few of these on the Extranet...
The one top left corner of the first image in the first post, looks like 424.20.40.20.02.004 - it doesn't identify the movement at all other than saying it's a 2500.
Did the same for the green dialed one you isolated above - 424.23.40.20.10.001 - same thing - it doesn't identify the movement other than a generic statement that it's a 2500 series.
So I went at this from another way around. I looked up the 2500E, and then clicked on the selection that tells me what watches that caliber is used in...."no results found"...
The tech guide showing the 2500E came out a little less than a year ago (copy I have I downloaded last December just before Xmas), so possibly this is too new to have been put into watches yet, due to the pandemic or something. Who knows.
Cheers, Al
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