Anyone know anything about this Jules Jürgensen day date?

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Only markings on the back say H73216 and 131997, not much comes up when I search those, especially a model with these two separate day and date windows at 3 and 9.

 
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Always found the name funny: Jules Jürgensen
Complication wise, the location of the day window is pretty irrelevant. Just need a different day wheel of course. I think I have seen it before in some other micro brand.
Movement is supporsed to be a caliber AS 1914.