Silkworm Research 1991
Now showing: North Korea - Postage stamps - 1991 - Silkworm Research - 6 stamps.
1991
Silkworm Research
27. March WM: None Perforation: 12ΒΌ
| No. | Type | D | Color | Description |
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| 3304 | DMO | 10Ch | multicoloured | Dr. Kye Ung Sang | 0.29 | - | 0.29 | - | USD |
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| 3305 | DMP | 20Ch | multicoloured | Antheraea pernyi | 0.58 | - | 0.29 | - | USD |
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| 3306 | DMQ | 30Ch | multicoloured | Attacus ricini | 0.58 | - | 0.29 | - | USD |
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| 3307 | DMR | 40Ch | multicoloured | Antheraea yamamai | 0.87 | - | 0.29 | - | USD |
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| 3308 | DMS | 50Ch | multicoloured | Bombyx mori | 0.87 | - | 0.58 | - | USD |
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| 3309 | DMT | 60Ch | multicoloured | Aetias artemis | 1.16 | - | 0.58 | - | USD |
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| 3304‑3309 | Minisheet | 6.96 | - | 2.90 | - | USD | |||||||||||
| 3304‑3309 | 4.35 | - | 2.32 | - | USD |
