Stamps, 18 Mar 1991
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Antigua
postage1991, Mar 18 Mountain and Rack Railway unwmk p. 14 (10 stamps)
| - | 25c | multi | Prince Regent | |||
| - | 30c | multi | Wales | |||
| - | 40c | multi | Hell gate | |||
| - | 60c | multi | Java | |||
| - | $1 | multi | Maine USA | |||
| - | $2 | multi | Pikes Peak | |||
| - | $4 | multi | Lake Lucerne | |||
| - | $5 | multi | Leopoldina Railway orchids | |||
| - | $6 | multi | Switzerland | — | — | |
| - | $6 | multi | Panama Canal | — | — |
India
1991, Mar 18 Launch of Indian Remote Sensing Satellite IRS-1A issue wmk. Asokan capital (no perf info)
| - | 6.5r | multi | Satellite IRS-1A |
Iran
1991, Mar 18 Iranian New Year 1991 issue - flowers (1991 Iran) unwmk p. 13.5x13
| - | 20r | multi | Iris spuria | |||
| - | 20r | multi | Iris lycotis | |||
| - | 20r | multi | Iris demawendica | |||
| - | 20r | multi | Iris meda |
China, PRC
1991, Mar 18 120th Anniversary of Paris Commune issue p. 11.5x11
| - | 20f | multi |
Falkland Islands
1991, Mar 18 orchids (1991 Falkland Islands) wmk. crown & CA spiral p. 14x13.75
| - | 12p | multi | Gavilea australis | |||
| - | 26p | multi | Codonorchis lessonii | |||
| - | 31p | multi | Chlorea gaudichaudii | |||
| - | 62p | multi | Gavilea littoralis |
Mongolia
1991, Mar 18 70th Anniversary of Mongolian People's Army issue unwmk p. 14
| - | 60m | multi |
St. Vincent
1991, Mar 18 500th Anniversary of Discovery of America 1992 issue p. 13.5x14 (20 stamps)
Yemen
1991, Mar 18 Mushrooms 1991 issue - mushrooms (1991 Yemen) (no wmk info) (no perf info) (7 stamps)
| - | 50f | multi | Boletus aestivalis | — | — | |
| - | 60f | multi | Suillus luteus | — | — | |
| - | 80f | multi | Gyromitra esculenta | — | — | |
| - | 100f | multi | Leccinum scabrum | — | — | |
| - | 130f | multi | Amanita muscaria | — | — | |
| - | 200f | multi | Boletus erythropus | — | — | |
| - | 300f | multi | Leccinum testaceoscabrum | — | — |
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