Vietnam/Annam, Tu Duc (1848-1883), silver 5 tien, undated, Tu Duc Thong Bao, Trieu Dan Lei Clic ('Tu Duc General currency complete confidence in it'), rev. dragon around central square hole, wt. 18.23gms. (KM.456.1; Sch.349.2), good extremely fine (£1250-1500)