Pocket writing kit Object

Pocket-sized writing kit or escritoire encased in a leather oyster case with head-and-shoulders portrait illustration possibly of the publisher. Includes 2 bone folders, empty glass bottle for ink, envelope opener[?], silver blank writing book with floral decorations (78 x 28 mm), and "Calender auf das Jahr nach Jefu Chrifti unfers heilandes Geburt, Augsburg : Verlegt von Joh. Pet. Ebner, 1800" ([32] pages ; 75 x 28 mm) in blindstamped silver wrappers.
Housed in decorative blindstamped leather oyster case.