French silver cup 18th century. 18th century, Jurisdiction of Dijon, Avallon - Semur-en-Auxois JC - Jean-Baptiste Chin, Silversmith hoe start in 1760 in Avallon then in Semur-en-Auxois from 1767 till 1818. punch for the jurisdiction of Dijon in the shape of a swan letter date I probably used between 1767 - 1774 117gr.