Stamps, 21 Mar 1978
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Central African Republic
airmail1978, Mar 21 post & telecom progress issue unwmk (no perf info) (5 stamps)
| - | 100fr | multi | — | — | ||
| - | 200fr | multi | — | — | ||
| - | 500fr | multi | — | — | ||
| - | 1500fr | multi | — | — | ||
| - | 1500fr | multi | — | — |
Costa Rica
1978, Mar 21 21st Congress of Confederation of Latin American Tourist Organizations issue p. 10.75 (5 stamps)
| - | 50c | multi | ||||
| - | 1.00col | multi | ||||
| - | 2.00col | multi | ||||
| - | 5.00col | multi | ||||
| - | 10.00col | multi |
Dominican Republic
postage1978, Mar 21 Holy Week 1978 issue
| - | 2c | multi | .20 | .20 | ||
| - | 6c | multi | .20 | |||
| - | 7c | multi | p. 12 | .20 | .20 | |
| - | 10c | multi | p. 12 | .20 |
German Democratic Republic
1978, Mar 21 Intercosmos 1978 issue (no perf info)
| X | 10pf | multi | rocket | |||
| X | 20pf | multi | satellite | |||
| - | 35pf | multi | satellite | |||
| - | 100pf | multi | Multispectral |
Libya
1978, Mar 21 Children's Day 1978 issue (5 stamps)
| - | 40dh | multi | ||||
| - | 40dh | multi | ||||
| - | 40dh | multi | ||||
| - | 40dh | multi | ||||
| - | 40dh | multi |
Samoa
1978, Mar 21 aviation progress issue - aircraft (1978 Samoa) wmk. kava bowl & WS p. 14
| - | 12s | multi | Boeing 737 of Polynesian Airlines | |||
| - | 24s | multi | Wright Flyer at Kitty Hawk | |||
| - | 26s | multi | Kingsford-Smith Fokker | |||
| - | 50s | multi | Concorde |
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