Mongolia, Michel 8 Ib used, 1926 Symbols 1 c blue type I with black overprint. Block of 8 tied by ULANBATOR XI 26 cancel. This was a part of Neiso Mizuhara collection, depicted in his book HUAYOU JIJIN page 90. Probably the largest recorded unit. A few perforation problems, but otherwise a superb exhibition lot. (Image1)