Menampilkan: Mongolia - Prangko (1924 - 2025) - 24 prangko.
2. Februari WM: Tiada Perforasi: 12
April WM: Tiada Perforasi: 12½ x 12
15. Agustus WM: Tiada Perforasi: 11
16. September WM: Tiada Perforasi: 11½ x 12
26. September WM: Tiada Perforasi: 11½ x 12
1. November WM: Tiada Perforasi: 11½
| No. | Tipe | D | Warna | Deskripsi |
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| 337 | KH | 5M | warna-warni | Incachis io | 0,59 | - | 0,29 | - | USD |
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| 338 | KI | 10M | warna-warni | Gonepteryx rhamni | 0,59 | - | 0,29 | - | USD |
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| 339 | KJ | 15M | warna-warni | Aglais urticae | 0,88 | - | 0,29 | - | USD |
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| 340 | KK | 20M | warna-warni | Parnassius apollo | 0,88 | - | 0,29 | - | USD |
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| 341 | KL | 30M | warna-warni | Papilio machaon | 1,18 | - | 0,29 | - | USD |
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| 342 | KM | 60M | warna-warni | Agrodiaetus damon | 1,77 | - | 0,59 | - | USD |
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| 343 | KN | 1T | warna-warni | Limenitis populi | 2,36 | - | 0,88 | - | USD |
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| 337‑343 | 8,25 | - | 2,92 | - | USD |
Desember WM: Tiada Perforasi: 12
