Rare mechanical pencil with 18k gold Calendar and Seal

DESCRIPTION: mechanical pencil entirely embossed and finely chiseled, the upper part, which acts as a calendar, faceted and engraved with the days of the month and the week, the top consisting of a square-based seal engraved with initials and noble crown, with embossed handle and chiseled with volutes, unscrewable from the body of the mechanical pencil, WEIGHT: g 15.3