No real confirmation either way, but there's a lot of misconceptions related to UG dials!
The main reason is that the reference of a UG chronograph does not relate to the dial or hands. It is related to the case and movement. Hence, you will find several different dial/ designs under the same reference number.
It is also very unfortunate that too many forum members jumps up and shouts "redial" without really having the knowledge to do so (and without telling WHY they conclude this way).
As for your watch,if it has been redialed, it have been done extremely professionally!
There is a discrepancy between the Italian Chrono24 dial and yours in the printing of "Swiss Made" and the fonts/width of the "COMPAX" text.
No conclusive evidence apart from that I am afraid.
For all but the most picky of us (and there are a few in here), I would say it is a lovely looking example (redial or not)!