1924, Scepter of Indra, 1c multicolored on beige paper, perforation 13½, bottom right corner sheet margin horizontal strip of four with perfin ''Obrazets'' (Specimen), full OG, NH, VF and rare, especially without invalidating perforation (Image)

1932, Lake and Mountains, trial color proof of 1t in ultra, perforation 11½, mounted on grayish yellow card and overprinted ''Project. 20 March.1932'', size 82x102mm, nice quality, VF and very scarce (Image)

1941, Provisional black surcharge 30m on 3t lilac, part of violet Ulan Bator cancellation, minor usual perforation flaws, mainly VF and scarce, N. Mandrovski certificate, the stamp is listed and priced with ''-'' in Scott (Image)

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 (Image)

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

Air Post stamps. 1982, Space Exploration, 60m multicolored, imperforated complete set of eight and souvenir sheet of 4t multicolored, trial printings, placed on three presentation cards of Hungarian State Printing Company, one with suggested corrections provided by Mongolian Post official, mostly fresh and VF (Image)