- | 6c | multi | Diogenes | |||
- | 31c | multi | Euclid, Ptolemy, Zoroaster, Raphael | |||
- | 50c | multi | Euclid | |||
- | 2le | multi | Pythagoras, Francesco Maria della Rovere | |||
- | 3le | multi | Plato and Aristotle | — | — |
- | 6c | multi | agricultural training | .20 | .20 | |
- | 10c | multi | Tourism Development | .20 | .20 | |
- | 50c | multi | Broadcast Training | |||
- | 1le | multi | Airport Services |
- | 1le | multi |
- | 6c | multi | Pan troglodytes | |||
- | 10c | multi | Pan troglodytes | |||
- | 31c | multi | Pan troglodytes | |||
- | 60c | multi | Pan troglodytes | |||
- | 3le | multi | Loxodonta africana | — | — |
- | 6c | multi | Traditional communications | .20 | .20 | |
- | 10c | multi | Mano River mail | .20 | .20 | |
- | 20c | multi | satellite ground station | |||
- | 1le | multi | English packet 1805 | |||
- | 2le | multi | — | — |
- | 6c | multi | Montgolfiere 1783 | |||
- | 20c | multi | Wolfert's Airship "Deutschland", Berlin | |||
- | 50c | multi | Amundsen's Airship N.1 "Norge", North Pole | |||
- | 1le | multi | "Cap Sierra" Sport Balloon | |||
- | 2le | multi | — | — |