The Korean DVD contains the FRENCH version...

Yes, the Korean DVD contains the French-language alternate version, starring Pierre Vaneck and Gil Vidal. Marianne KOCH plays the same title role in both, as Isabella Pia and some others, but the rest of the cast - and the language - is different.
You can find easily this French version on DVD, but if you want to see the German-speaking alternate one, starring Horst Buchholz and Udo Vioff, just send me a message. Unfortunately, it's in German with FRENCH subs, having been recorded from French TV directly on DVD-R.
The print is beautiful. If you have seen the French version (with the English subs), you'll follow the movie very easily as the dialogue and mise-en-scène are exactly similar, both versions having been directed simultaneously by the great Julien Duvivier.