Tibet, under Tibetan Authority, 'Ga-den' silver or billon tangka coinage, of type petals around lotus centre, Dodpal mint (Lhasa), a selection of extensively described tangkas using Scott Seman's classification system, all dated to period, c.1840-1850s (6) or 1870-1875 (14, one illustrated), all are variants of (KM.Y13, 13.1, 13.B with varieties). Mostly fine - good very fine, in 2x2 holders fully described. (20)