Bidspirit auction | One Man Collection of Tannu

One Man Collection of Tannu Tuva - O.K.T.E. surcharges on Fiscal stamps - 1932, black handstamp 5k on fiscal stamp of 6k yellow, a part of postal cancellation at top left, perforation defect at bottom, still F/VF and very rare, Ustinovsky #C3, Est. $500-$600