Menampilkan: San Marino - Prangko (1920 - 1929) - 13 prangko.
30. Mei WM: 1 Perforasi: 14
26. Juli WM: Tiada Ukuran kertas: 50 Ukiran: Officina Calcografica Italiana - Roma Perforasi: 12
6. Agustus WM: 1 Ukuran kertas: 50 Perforasi: 14
11. Agustus WM: 1 Ukuran kertas: 50 Perforasi: 14
20. September WM: 1 Perforasi: 14
| No. | Tipe | D | Warna | Deskripsi |
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| 91 | AC | 5+5 C | zaitun | (90000) | 0,59 | - | 0,29 | - | USD |
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| 92 | AC1 | 10+5 C | oranye | (80010) | 0,59 | - | 0,29 | - | USD |
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| 93 | AC2 | 15+5 C | hijau tua | (80010) | 0,59 | - | 0,29 | - | USD |
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| 94 | AC3 | 25+5 C | merah tua | (80010) | 1,77 | - | 0,59 | - | USD |
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| 95 | AC4 | 40+5 C | ungu cokelat | (60030) | 7,06 | - | 2,35 | - | USD |
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| 96 | AC5 | 50+5 C | abu-abu | (100080) | 4,71 | - | 0,29 | - | USD |
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| 97 | AD | 1+5 L/C | hitam/biru | (60120) | 17,66 | - | 4,71 | - | USD |
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| 98 | AE | 60+5 C | merah tua | Express stamp | (70014) | 7,06 | - | 1,18 | - | USD |
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| 91‑98 | 40,03 | - | 9,99 | - | USD |
29. September WM: 1 Ukuran kertas: 50 Perforasi: 14
