Menampilkan: Mongolia - Prangko (1950 - 1959) - 11 prangko.
1. Februari WM: Tiada Perforasi: 12½
1. Juni WM: Tiada Perforasi: 12½
| No. | Tipe | D | Warna | Deskripsi |
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| 121 | XBZ | 20M | coklat | (100.000) | - | 0,88 | 0,88 | - | USD |
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| 122 | XBZ1 | 30M | coklat zaitun | (100.000) | - | 1,18 | 1,18 | - | USD |
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| 123 | XBZ2 | 40M | biru | (100.000) | - | 1,18 | 1,18 | - | USD |
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| 124 | XBZ3 | 60M | hijau kebiruan | (100.000) | - | 1,77 | 1,77 | - | USD |
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| 125 | XBZ4 | 1T | merah tua | (100.000) | - | 2,94 | 2,94 | - | USD |
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| 121‑125 | - | 7,95 | 7,95 | - | USD |
1. Juli WM: Tiada Perforasi: 9
