Did Omega use La Champagne movements?

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I bought this, while I was on the hunt for a La Champagne (also called Champ or Aster) caliber 28-20.


I'm aware that this is probably not an Omega, but I wont to know if there is anything you can tell about the watch. Thanks.
 
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And the picture of the movement?
 
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Very cool watch. Do you perhaps know where to find more information about the Champ or Aster? I got one myself and love it, but there is very little to find about these great vintage tanks.
 
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What kind of information are you looking for? I do know, that the Champ 28-20 was available as a hand or automatic winding version. I do have both of them.