First film to see Dracula as a old man who becomes younger

So this film is historically significant in the Dracula universe whether people like it or not. How interesting.

I don't know if Dracula has a moustache in other version. There are a number of spoof versions of the story. But in a video on the 12 Dracula movies that come nearest to the book version, taking just about everything into consideration, this Franco version gets third place.