Viser nu Travancore - Officielle frimærker (1911 - 1947) - 8 frimærker.
1931
Shell - Overprinted "ON S S"
VM: Ingen Perforeringer: 12
![[Shell - Overprinted "ON S S", type T]](https://www.stampworld.com/media/catalogue/Travancore/Official-stamps/T-s.jpg)
![[Shell - Overprinted "ON S S", type U]](https://www.stampworld.com/media/catalogue/Travancore/Official-stamps/U-s.jpg)
![[Shell - Overprinted "ON S S", type V]](https://www.stampworld.com/media/catalogue/Travancore/Official-stamps/V-s.jpg)
![[Shell - Overprinted "ON S S", type W]](https://www.stampworld.com/media/catalogue/Travancore/Official-stamps/W-s.jpg)
![[Shell - Overprinted "ON S S", type X]](https://www.stampworld.com/media/catalogue/Travancore/Official-stamps/X-s.jpg)
![[Shell - Overprinted "ON S S", type Z]](https://www.stampworld.com/media/catalogue/Travancore/Official-stamps/Z-s.jpg)
| Nr. | Type | D | Farve | Beskrivelse |
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| 13 | T | 6Ca | Rødbrun | - | 0,55 | 0,55 | - | USD |
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| 14 | U | 10Ca | Karmin | - | 3,29 | 2,20 | - | USD |
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| 15 | V | ¾Ch | Sort | - | 0,55 | 0,55 | - | USD |
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| 16 | W | 1¼Ch | Brunlig lilla | - | 0,82 | 0,55 | - | USD |
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| 17 | X | 4Ch | Mørkegrøn | - | 1,10 | 0,55 | - | USD |
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| 17a* | Y | 4Ch | Mørkegrøn | yr.1934 | - | 3,29 | 6,04 | - | USD |
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| 18 | Z | 7Ch | lilac red | - | 2,20 | 0,55 | - | USD |
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| 19 | AA | 14Ch | Orange | - | 3,29 | 1,10 | - | USD |
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| 13‑19 | Sæt (* Mærke ikke inkluderet i dette sæt) | - | 11,80 | 6,05 | - | USD |
