Ditunjukkan sekarang: San Marino - Setem-setem bayaran pos (1980 - 1989) - 20 Setem-setem.
24. February WM: Tiada Saiz Helaian: 40 Corak: A. Titonel Ukiran: I.P.Z.S. Roma Perforasi: 14¼ x 13¼
![[Pioneers of Science, jenis AIO]](https://www.stampworld.com/media/catalogue/San-Marino/Postage-stamps/AIO-s.jpg)
![[Pioneers of Science, jenis AIP]](https://www.stampworld.com/media/catalogue/San-Marino/Postage-stamps/AIP-s.jpg)
![[Pioneers of Science, jenis AIQ]](https://www.stampworld.com/media/catalogue/San-Marino/Postage-stamps/AIQ-s.jpg)
![[Pioneers of Science, jenis AIR]](https://www.stampworld.com/media/catalogue/San-Marino/Postage-stamps/AIR-s.jpg)
![[Pioneers of Science, jenis AIS]](https://www.stampworld.com/media/catalogue/San-Marino/Postage-stamps/AIS-s.jpg)
![[Pioneers of Science, jenis AIT]](https://www.stampworld.com/media/catalogue/San-Marino/Postage-stamps/AIT-s.jpg)
| No. | Jenis | D | Warna | Deskripsi |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1280 | AIO | 150(L) | pelbagai warna | Alexander Fleming | (500000) | 0.29 | - | 0.29 | - | USD |
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| 1281 | AIP | 250(L) | pelbagai warna | Alessandro Volta | (500000) | 0.29 | - | 0.29 | - | USD |
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| 1282 | AIQ | 350(L) | pelbagai warna | Evangelista Torricelli | (500000) | 0.29 | - | 0.29 | - | USD |
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| 1283 | AIR | 400(L) | pelbagai warna | Carl Linnaeus | (500000) | 0.59 | - | 0.59 | - | USD |
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| 1284 | AIS | 1000(L) | pelbagai warna | Pythagoras | (500000) | 0.88 | - | 0.88 | - | USD |
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| 1285 | AIT | 1400(L) | pelbagai warna | Leonardo da Vinci | (500000) | 1.17 | - | 1.17 | - | USD |
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| 1280‑1285 | 3.51 | - | 3.51 | - | USD |
24. February WM: Tiada Saiz Helaian: 40 Corak: T. Mele Ukiran: I.P.Z.S. Roma Perforasi: 13¼ x 14
![[The 100th Anniversary of San Marino High School, jenis AIU]](https://www.stampworld.com/media/catalogue/San-Marino/Postage-stamps/AIU-s.jpg)
20. April WM: Tiada Ukiran: Courvoisier Perforasi: 12 x 11¾
![[EUROPA Stamps - Inventions of Auguste Piccard, jenis AIV]](https://www.stampworld.com/media/catalogue/San-Marino/Postage-stamps/AIV-s.jpg)
![[EUROPA Stamps - Inventions of Auguste Piccard, jenis AIW]](https://www.stampworld.com/media/catalogue/San-Marino/Postage-stamps/AIW-s.jpg)
20. April WM: Tiada Ukiran: I.P.Z.S. Roma Perforasi: 14 x 13¼
![[World Communications Year, jenis AIX]](https://www.stampworld.com/media/catalogue/San-Marino/Postage-stamps/AIX-s.jpg)
![[World Communications Year, jenis AIY]](https://www.stampworld.com/media/catalogue/San-Marino/Postage-stamps/AIY-s.jpg)
20. April WM: Tiada Saiz Helaian: 40 Ukiran: I.P.Z.S. Roma Perforasi: 14 x 13¼
![[Formula One - San Marino Grand Prix, jenis AIZ]](https://www.stampworld.com/media/catalogue/San-Marino/Postage-stamps/AIZ-s.jpg)
![[Formula One - San Marino Grand Prix, jenis AIZ1]](https://www.stampworld.com/media/catalogue/San-Marino/Postage-stamps/AIZ1-s.jpg)
22. May WM: Tiada Ukiran: I.P.Z.S. Roma Perforasi: 13¼ x 14
![[The 200th Anniversary of Aviation, jenis AJA]](https://www.stampworld.com/media/catalogue/San-Marino/Postage-stamps/AJA-s.jpg)
29. July WM: Tiada Saiz Helaian: 50 Ukiran: Courvoisier Perforasi: 11¾
![[World Cities - Rio de Janeiro, jenis AJC]](https://www.stampworld.com/media/catalogue/San-Marino/Postage-stamps/AJC-s.jpg)
29. September WM: Tiada Saiz Helaian: 40 Corak: A. Sassu Ukiran: I.P.Z.S. Roma Perforasi: 14 x 13¼
![[The 20th Anniversary of the UN World Food Programme, jenis AJD]](https://www.stampworld.com/media/catalogue/San-Marino/Postage-stamps/AJD-s.jpg)
1. December WM: Tiada Perforasi: 13¾
![[Christmas - The 500th Anniversary of the Birth of Raffaelo Sanzio, 1483-1520, jenis ]](https://www.stampworld.com/media/catalogue/San-Marino/Postage-stamps/1297-b.jpg)
