showing a fine, practically complete strike of the very rare "TEMPORARY-P.O.B./6 NO./03" single-ring d.s. applied at Tangu and a fair strike of the "KHAMBA-JONG/TIBET" (7/11) single-ring d.s. Very few incoming items are known to exist. Photo " /> <I> "Mess President, Tibet Frontier Commission"</I> showing a fine, practically complete strike of the very rare "TEMPORARY-P.O.B./6 NO./03" single-ring d.s. applied at Tangu and a fair strike of the "KHAMBA-JONG/TIBET" (7/11) single-ring d.s. Very few incoming items are known to exist. Photo | Christie's