Montre maintenant: Mongolie - Timbres-Poste (1924 - 2025) - 7 Timbres-poste.
1931
Issue for Ulan Bator
1. juillet WM: Aucun Perforation: 11
| No. | Genre | D | Couleur | Description |
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| 41 | I | 1C | bleu | - | 25,90 | 12,43 | - | USD |
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| 42 | I1 | 2C | orange | - | 31,09 | 51,81 | - | USD |
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| 43 | I2 | 5C | pourpre | - | 41,45 | 10,36 | - | USD |
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| 44 | I3 | 10C | vert | - | 31,09 | 10,36 | - | USD |
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| 45 | I4 | 20C | marron | - | 51,81 | 10,36 | - | USD |
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| 46 | I5 | 50C | marron/vert | - | 181 | 129 | - | USD |
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| 47 | I6 | 1$ | marron/rouge clair | - | 207 | 181 | - | USD |
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| 41‑47 | - | 569 | 406 | - | USD |
