Tortoiseshell And Gilded Brass Ball Book

Ball notebook presented in a binding composed of two domed tortoiseshell plaques finely set in a frame with floral motifs pierced and finely engraved in gilded brass.
In the center of the first cover an AB monogram. Inside we find a notebook of blank sheets, which has two cardboard sheets in the middle with the days of the week printed in gold.
At the end of the notebook is a calendar decorated with fine engravings dated 1857.
The interior reverses are covered with beige moire, a gusset for reserving business cards and a refillable silver mechanical pencil (Boar hallmark).
A pin forming a hinge at the edge of the pages allowed the notebook to be replaced.
Dimensions: 9.70 cm x 6.60 cm - thickness: 1.20 cm.
Wear to the gilding of the monogram.
Napoleon III period.
This item most likely comes from the boutiques of the Palais Royal in Paris