1959, Mongolian Language Congress, 40m multicolored, top right corner sheet margin horizontal pair, imperforated vertically between stamps and on the right, full OG, NH, VF

150.00

1959, Congress of Rural Economy, 30m green, left sheet margin single, imperforated on the left, full OG, NH, VF

100.00

1980, Intercosmos Space Program, trial printings of 40m multicolored, comb perforation 12, set of five in horizontal top or bottom sheet margin strips of three, full OG, NH, VF and scarce, a common stamps were issued in se-tenant miniature sheet of ten (one of each) only

150.00