Tibet, under Tibetan Authority, 'Ga-den' silver or billon tangka coinage, of type petals around lotus centre, Dokde mint, Lhasa, (15) dated to period 1912-1925 all described tangkas using Scott Seman's classification system, all are variants of type Seman's F (cf.KM.Y13F.7-.15); together with issues (4) c.1920 (G), 1925 (H) from the (Serkhang) or Mekyi mint (Lhasa), (KM.Y13.9 as type G and H, one illustrated); lot includes an distinctive issue c.1909 as a presentation issue to monks (KM.Y.14). Mostly fine - extremely fine, in 2x2 holders fully described. (20)