The charter is about salt.

Description	The charter is about salt. : [Approved in Tsarskoe Selo, June 16, 1781]. - [St. Petersburg]: [Senate. type.], [1781]. -30 s. ; 2 °. - Baking. on paper with watermarks in 1780 Excellent. feature publ.: p. 30 begins § 101. Without tit. l. SK XVIII. . Source of the electronic copy: RSL
Publisher	[Сенат. тип.]