Now showing: Cook Islands - Official stamps (1975 - 1998) - 16 stamps.
1978
Sea Shells & Queen Elizabeth II - Cook Island Postage Stamps Overprinted "O.H.M.S."
19. October WM: None Perforation: 13½
![[Sea Shells & Queen Elizabeth II - Cook Island Postage Stamps Overprinted "O.H.M.S.", type N]](https://www.stampworld.com/media/catalogue/Cook-Islands/Official-stamps/N-s.jpg)
![[Sea Shells & Queen Elizabeth II - Cook Island Postage Stamps Overprinted "O.H.M.S.", type O]](https://www.stampworld.com/media/catalogue/Cook-Islands/Official-stamps/O-s.jpg)
![[Sea Shells & Queen Elizabeth II - Cook Island Postage Stamps Overprinted "O.H.M.S.", type P]](https://www.stampworld.com/media/catalogue/Cook-Islands/Official-stamps/P-s.jpg)
![[Sea Shells & Queen Elizabeth II - Cook Island Postage Stamps Overprinted "O.H.M.S.", type Q]](https://www.stampworld.com/media/catalogue/Cook-Islands/Official-stamps/Q-s.jpg)
![[Sea Shells & Queen Elizabeth II - Cook Island Postage Stamps Overprinted "O.H.M.S.", type R]](https://www.stampworld.com/media/catalogue/Cook-Islands/Official-stamps/R-s.jpg)
![[Sea Shells & Queen Elizabeth II - Cook Island Postage Stamps Overprinted "O.H.M.S.", type S]](https://www.stampworld.com/media/catalogue/Cook-Islands/Official-stamps/S-s.jpg)
![[Sea Shells & Queen Elizabeth II - Cook Island Postage Stamps Overprinted "O.H.M.S.", type T]](https://www.stampworld.com/media/catalogue/Cook-Islands/Official-stamps/T-s.jpg)
![[Sea Shells & Queen Elizabeth II - Cook Island Postage Stamps Overprinted "O.H.M.S.", type U]](https://www.stampworld.com/media/catalogue/Cook-Islands/Official-stamps/U-s.jpg)
![[Sea Shells & Queen Elizabeth II - Cook Island Postage Stamps Overprinted "O.H.M.S.", type V]](https://www.stampworld.com/media/catalogue/Cook-Islands/Official-stamps/V-s.jpg)
![[Sea Shells & Queen Elizabeth II - Cook Island Postage Stamps Overprinted "O.H.M.S.", type W]](https://www.stampworld.com/media/catalogue/Cook-Islands/Official-stamps/W-s.jpg)
![[Sea Shells & Queen Elizabeth II - Cook Island Postage Stamps Overprinted "O.H.M.S.", type X]](https://www.stampworld.com/media/catalogue/Cook-Islands/Official-stamps/X-s.jpg)
![[Sea Shells & Queen Elizabeth II - Cook Island Postage Stamps Overprinted "O.H.M.S.", type AB]](https://www.stampworld.com/media/catalogue/Cook-Islands/Official-stamps/AB-s.jpg)
![[Sea Shells & Queen Elizabeth II - Cook Island Postage Stamps Overprinted "O.H.M.S.", type AB1]](https://www.stampworld.com/media/catalogue/Cook-Islands/Official-stamps/AB1-s.jpg)
| No. | Type | D | Color | Description |
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| 16 | N | 1C | multicoloured | Vasum turbinellus | 0.85 | - | 0.28 | - | USD |
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| 17 | O | 2/½C | multicoloured | Phallicium glaucum | 0.85 | - | 0.28 | - | USD |
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| 18 | P | 5/½C | multicoloured | Phallicium glaucum | 0.85 | - | 0.28 | - | USD |
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| 19 | Q | 10/8C | multicoloured | Bursa granularis | 0.85 | - | 0.28 | - | USD |
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| 20 | R | 15/50C | multicoloured | Conus textile | 1.13 | - | 0.28 | - | USD |
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| 21 | S | 18/60C | multicoloured | Oliva sericea | 1.13 | - | 0.28 | - | USD |
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| 22 | T | 25C | multicoloured | Gloripallium pallium | 1.13 | - | 0.28 | - | USD |
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| 23 | U | 30C | multicoloured | Conus miles | 1.13 | - | 0.28 | - | USD |
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| 24 | V | 35/60C | multicoloured | Oliva sericea | 1.70 | - | 0.57 | - | USD |
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| 25 | W | 50C | multicoloured | Conus textile | 2.27 | - | 0.57 | - | USD |
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| 26 | X | 60C | multicoloured | Oliva sericea | 2.84 | - | 0.57 | - | USD |
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| 27 | Y | 1$ | multicoloured | Queen Elizabeth II | 6.81 | - | 0.85 | - | USD |
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| 28 | Z | 1$ | multicoloured | Queen Elizabeth II | 6.81 | - | 0.85 | - | USD |
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| 29 | AA | 2$ | multicoloured | Queen Elizabeth II | 11.34 | - | 3.40 | - | USD |
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| 30 | AB | 4$ | multicoloured | Queen Elizabeth II | 17.02 | - | 3.40 | - | USD |
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| 31 | AB1 | 6$ | multicoloured | Queen Elizabeth II | 17.02 | - | 5.67 | - | USD |
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| 16‑31 | 73.73 | - | 18.12 | - | USD |
