Paris Barbier-Mueller sale: What Steps are being Taken by France to Stop Trade in Dodgy Antiquities?

France finally ratified the 1970 Convention on the Means of Prohibiting and Preventing the Illicit Import, Export and Transfer of Ownership of Cultural Property. Paris (!) on 1st July 1997 making a series of (financial) reservations to the definition of the objects covered, but these do not apply to

Archaeological objets more than 100 years old originating from :
- terrestrial and submarine excavations and discoveries,
- archaeological sites,
archaeological collections or
Elements more than 100 years old that form an integral part of artistic, historic ou religious monuments which have been dismembered

So anything being placed on sale in Paris since 1st July 1997 to be a licit sale (Art. 3) has to comply with the principles of the UNESCO Convention.

So, with regard to the Paris Barbier-Mueller sale, has anyone from the French National Committee for UNESCO taken the trouble to take a trot out of its Paris office across the Pont Alexandre III to Rue du Faubourg Saint-Honoré just two kilometres away to have a word with Sotheby's about that? Or is UNESCO not actually bothered too much about the mechanics of dealing with the illicit trade and really interested only in writing meaningless internal reports about 'how well' it is doing?

Or do the French measures dependent on the 1970 UNESCO Convention actually only apply anyway to items removed from another EU source country, hang the rest of the world? Where is the legislation implementing the measures of the Convention? What steps are being taken by France to deal with the trade in dodgy antiquities?