I'm not sure I agree. The mark is not listed in either volume of Arminjon's books of Parisian marks, nor on the French Architecture & Patrimoine website which covers Paris marks up into the 20th century.
Moreover, I definitely see something underneath Minerva's chin which could be a différent: the small distinctive unique character used to identify the provincial assay offices. A large, sharp photo of the Minerva might help. Also (as I mentioned in a
recent thread) you can tell if the piece was assayed at a provincial office by the orientation of the insects on the bigorne mark opposite the Minerva's head. That alone, though, won't tell you which office; only the différent will do that. Unfortunately, if the différent is too worn to be legible, identifying the maker will very much be a needle in a haystack if the piece is indeed provincial.