Now showing: Monaco - Postage stamps (1920 - 1929) - 9 stamps.
WM: None Sheetsize: 150 Perforation: 14 x 13½
![[Viaduct and Monaco Harbour, type AO]](https://www.stampworld.com/media/catalogue/Monaco/Postage-stamps/AO-s.jpg)
![[Viaduct and Monaco Harbour, type AO1]](https://www.stampworld.com/media/catalogue/Monaco/Postage-stamps/AO1-s.jpg)
![[Viaduct and Monaco Harbour, type AO2]](https://www.stampworld.com/media/catalogue/Monaco/Postage-stamps/AO2-s.jpg)
![[Viaduct and Monaco Harbour, type AR]](https://www.stampworld.com/media/catalogue/Monaco/Postage-stamps/AR-s.jpg)
![[Viaduct and Monaco Harbour, type AR1]](https://www.stampworld.com/media/catalogue/Monaco/Postage-stamps/AR1-s.jpg)
![[Viaduct and Monaco Harbour, type AR2]](https://www.stampworld.com/media/catalogue/Monaco/Postage-stamps/AR2-s.jpg)
![[Viaduct and Monaco Harbour, type AR3]](https://www.stampworld.com/media/catalogue/Monaco/Postage-stamps/AR3-s.jpg)
| No. | Type | D | Color | Description |
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| 97 | AO | 1Fr | black on yellow | (1127918) | 0.79 | - | 0.26 | - | USD |
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| 98 | AO1 | 1.05Fr | purple | (617115) | 0.79 | - | 0.79 | - | USD |
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| 99 | AO2 | 1.10Fr | green | (170972) | 12.66 | - | 5.27 | - | USD |
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| 100 | AR | 2Fr | violet brown | (296994) | 3.16 | - | 0.79 | - | USD |
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| 101 | AR1 | 3Fr | carmine grey | (233838) | 31.65 | - | 10.55 | - | USD |
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| 102 | AR2 | 5Fr | bluish green | (177490) | 12.66 | - | 6.33 | - | USD |
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| 103 | AR3 | 10Fr | yellowish brown | (142081) | 31.65 | - | 15.82 | - | USD |
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| 97‑103 | 93.36 | - | 39.81 | - | USD |
WM: None Sheetsize: 150 Perforation: 14 x 13½
![[Prince Louis II, type AV]](https://www.stampworld.com/media/catalogue/Monaco/Postage-stamps/AV-s.jpg)
![[Prince Louis II, type AV1]](https://www.stampworld.com/media/catalogue/Monaco/Postage-stamps/AV1-s.jpg)
