TIBET. c. 1925, First Issue,1/3t indigo blue, complete sheet. (Waterfall #38 [21F8]). This is by far the scarcest of the 1912 values when found in complete sheets with margins. Some sheets, such as this, were cut close and sold by the Post Office (See N. Rhodes article on the Williamson Collection [Postal Journal #36, 1983.]). AIl sheets of this value are very scarce, indigo blue printing is very rare! (Waterfall rates a sheet at 12 times that of the most common printings of this value.). Without gum as issued. Very Fine. Chan TL2. (Photo). Est. 400 - 500 CHF.