I've had invaluable assistance from Sabine Schierhoff, Judy Lukas, Charo Palacios and Bronwyn Parry translating the description at the bottom of this fashion plate and finding fabric online.
We've worked out that it is telling us that the Redingote is decorated with an Astracan imitation made from silk plush(velvet) and that the turban is made of Muslin. The L'evantine fabric of the Redingote- [F. levantine, or It. levantina.] is a stout twilled silk fabric, formerly made in the Levant.
I found a vintage Astrakhan coat and some nice wool fabric in January, but with this more expanded translation and time for much thinking about where and when I'd like to wear the coat, I have decided that I will make the coat from this dusty lavender silk twill, and ornament it with silk plush.