Ditunjukkan sekarang: Amerika Syarikat - Setem-setem mel udara (1918 - 2012) - 7 Setem-setem.
1941 -1944
Twin-Motor Transport Plane
WM: Tiada Perforasi: 11 x 10½
![[Twin-Motor Transport Plane, jenis P]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/P-s.jpg)
![[Twin-Motor Transport Plane, jenis P1]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/P1-s.jpg)
![[Twin-Motor Transport Plane, jenis P2]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/P2-s.jpg)
![[Twin-Motor Transport Plane, jenis P3]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/P3-s.jpg)
![[Twin-Motor Transport Plane, jenis P4]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/P4-s.jpg)
![[Twin-Motor Transport Plane, jenis P5]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/P5-s.jpg)
![[Twin-Motor Transport Plane, jenis P6]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/P6-s.jpg)
| No. | Jenis | D | Warna | Deskripsi |
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| 25 | P | 6C | merah tua merah | (4477 mill) | 0.29 | - | 0.29 | 2.31 | USD |
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| 26 | P1 | 8C | hijau zaitun | (1745 mill) | 0.29 | - | 0.29 | 3.47 | USD |
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| 27 | P2 | 10C | violet | (67 mill) | 1.16 | - | 0.29 | 9.24 | USD |
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| 28 | P3 | 15C | coklat merah tua | (78 mill) | 2.31 | - | 0.29 | 11.55 | USD |
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| 29 | P4 | 20C | hijau muda | (42 mill) | 2.31 | - | 0.29 | 13.86 | USD |
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| 30 | P5 | 30C | biru | (60 mill) | 2.31 | - | 0.58 | 23.11 | USD |
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| 31 | P6 | 50C | oren | (11 mill) | 11.55 | - | 2.89 | 34.66 | USD |
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| 25‑31 | 20.22 | - | 4.92 | 98.20 | USD |
