LOTTER, Tobias Conrad (1717-1777) Opulentissimum Sinarum Imperium. Augsburg, ca 1760.Hand-colored engraved map of China, image 491 x 568 mm (533 x 610 mm sheet) matted and framed. Decorative cartouches. (Lightly dampstained primarily in bottom margin.) The map shows the Great Wall and the Gobi Desert, and natural resources such as gold, silver, and iron are identified in the key.