China. Kwang Su (1875-1908). Tonkin Medal ND (by Dupuis) Issued for the Navy. Commemorative coin for the Tonkin Expedition, established on September 6, 1885, awarded to participants in the East Asian expedition to Tonkin, China and Annam in the years 1883-1885. With ball eyelet and ring, 30 mm, silver 15.02 g.