Keep in mind that back in this era, a lot of chronographs were made as comission pieces, and basically involved an independent watchmaker starting with a finished (or mostly finished) pocket watch movement (made by his apprentices, typically), to which he'd add the chronograph pieces. As chronographs grew in popularity, some small shops began to specialize in that exclusively; they would get their base pocket-watches from somewhere else, and use a pre-designed "kit" of chronograph parts. I believe it was even possible to "buy" just the (mostly) finished chronograph parts, which could then be added to pretty much any suitable 3/4 plate movement.
Point being that it isn't always easy to trace the lineage of these; there may have been three or four different watchmakers involved.
Thanks for the answer Rob, in my "madness" i was thinking this is a common mechanism...and can be easely identify...even without any name on the dial..
Seems to be "almoust" the same with few of them...but nothing.
At the begining of my search, i was thinking this is omega cal 39 lecoultre like this below:
I will put the photos after the cleaning ..
It will look great for sure , but still nothing about the machine ...or the producer
Maybe will remain a sort of "enigma" ( not the encripting machine from ww2 ) ))
The wristwatch chronographs for Universal were all made by Martel Watch Co. but this may predate their existence (UG were set up in Le Locle in 1894, moved to Geneve in 1917; Martel were set up in 1911).
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