Please would you consider asking the Musee des Arts Decoratifs, in Paris if they would be interested in acquiring these panels?
http://www.lesartsdecoratifs.fr/english-439/I am pretty sure they would be interested, and may well be prepared to:
make a very decent offer, possibly more than an architectural antiques dealer would offer,
take responsibility for packing, shipping, insurance etc,
give them a permanent display opportunity.
Your first point of contact would be:
Jennifer dot Hallot at lesartsdecoratifs dot fr
It would be worth including a link to this topic in your e-mail to her.
M