Now showing: New Guinea - Official stamps (1925 - 1932) - 10 stamps.
1925 -1931
No. 1-10 Overprinted "O S"
6. April WM: None Perforation: 11
![[No. 1-10 Overprinted "O S", type A2]](https://www.stampworld.com/media/catalogue/New-Guinea/Official-stamps/A2-s.jpg)
![[No. 1-10 Overprinted "O S", type A3]](https://www.stampworld.com/media/catalogue/New-Guinea/Official-stamps/A3-s.jpg)
| No. | Type | D | Color | Description |
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| 1 | A | 1P | yellowish green | - | 0.88 | 7.08 | - | USD |
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| 2 | A1 | 1½P | red | - | 7.08 | 23.58 | - | USD |
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| 3 | A2 | 2P | purple red | - | 2.36 | 4.72 | - | USD |
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| 4 | A3 | 3P | blue | - | 2.95 | 11.79 | - | USD |
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| 5 | A4 | 4P | olive | - | 3.54 | 11.79 | - | USD |
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| 6 | A5 | 6P | olive brown | - | 17.69 | 47.17 | - | USD |
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| 6A* | A6 | 6P | yellowish brown | - | 11.79 | 47.17 | - | USD |
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| 7 | A7 | 9P | violet | - | 4.72 | 47.17 | - | USD |
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| 8 | A8 | 1Sh | greenish blue | - | 5.90 | 47.17 | - | USD |
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| 9 | A9 | 2Sh | reddish brown | - | 35.38 | 94.34 | - | USD |
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| 1‑9 | Set (* Stamp not included in this set) | - | 80.50 | 294 | - | USD |
