301 to 307 of 307
airmail
1934 stratosphere ascent disaster issue - stratosphere victims wmk. Greek border & rosettes p. 11
| - | 20k | ultra | Fedoseinko |
1934 1934 airships issue - airships (1934) p. 13.75
| X | 20k | blk | alongside airship |
1935, Jan 25 Rescue of Chelyuskin Expedition issue unwmk
| - | 20k | mve |
1965, Dec 31 Soviet Civil Aviation issue p. 12.25x12
| - | 20k | multi | An-22 transport |
1977, Aug 16 Aviation 1977 issue - aviation (1976) (no perf info)
| - | 20k | multi | Sh-2 |
1978, Aug 10 History of Russian Aircraft issue
| - | 20k | multi | I-16 |
301 to 307 of 307