Dial is refinished. Case is likely a south american production - not a swiss omega case. And many times these are not solid gold no matter what markings are placed on the case.
I'd also wonder if the movement and dial / case are from the same period. I seem to recall the steel colored finish on the 30T2 was only in use for part of the 1940s, and that Omega switched to the copper-tone finish during that decade. Since the dial, case and handset are clearly late 40s or early 50s in style, it might mean that the movement did not initially belong with that dial /case and handset. (the hands and dial are actually early 50s, the case looks either late 40s or early 50s).
The watch is in Brazil. It explains the unusual case shape. About hands I agree. Problably not original. But the dial, for me it was not refinish. May be serviced, but not redial.
Most definitely a redial. The blunt edges of the subdial, and the bad quality of Omega logo and subdial print are all indicators.
The 'tick' lines do not appear to be very straight. Makes me wonder if they were redrawn, or if they got smeared a bit by a bad dial cleaning attempt.