Folding fan of painted skin leaf

Recto: trompe l'oeil pen-and-ink images of group of prints or drawings on various subjects on painted brown background. Verso: central drawing of medieval castle. Ivory monture, painted with scene on front, guards carved and painted with various motifs.The leaf was made in France, 1785-1790. The monture was made in China in the early-to-mid-19th century.