This group called The trafficking of men in the inventories of the manufacture belongs to the plastic production of the best Swiss porcelain factory led from 1763 to 1790 by Adam Spengler, a wise interpreter of the Enlightenment taste that moved the European avant-garde. He invented almost 400 models of small sculptures of which ours is one of the most original and rare. This group called "Trafficking in Men" in the inventories of the manufactory belongs to the plastic production of the best Swiss porcelain factory led from 1763 to 1790 by Adam Spengler , a wise interpreter of the Enlightenment taste that moved the European avant-garde. He invented nearly 400 small sculpture models of which ours is one of the most original and rare.