NICE SELECTION: 1924-56, 15 stamps (4 postally used), including Scepter of Indra, set of 6 (less 10c), $1 perforation 10, all with invalidating perforation, 4 values of Soyombo with No.33 and definitive set of 5 from 1956, all mint stamps with full OG, NH, F/VF, Est. $300-$400 (Image)

1959, Mongolian Language Congress, 40m multicolored, right sheet margin block of four, imperforated vertically between stamps and on the right, full OG, NH, VF, C.v. $300 as two pairs, Est. $250-$300 (Image)

1959, Congress of Rural Economy, 30m green, top left corner sheet margin single, imperforated on the left, full original patchy gum as always, NH, VF and scarce, Est. $150-$200 (Image)