United States
Now showing: United States - Postage stamps (1847 - 2024) - 1 stamps.
1983
American Inventors
21. September WM: None Perforation: 11
![[American Inventors, type ]](https://swmedia-4cd6.kxcdn.com/media/catalogue/United-States/Postage-stamps/1805-b.jpg)
No. | Type | D | Color | Description |
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1805 | BDO | 20C | orange/black | Charles Steinmetz, 1865-1923, and Curve on Graph | (48 mill) | 0.27 | - | 0.27 | 0.80 | USD |
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1806 | BDP | 20C | orange/black | (48 mill) | 0.27 | - | 0.27 | 0.80 | USD |
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1807 | BDQ | 20C | orange/black | (48 mill) | 0.27 | - | 0.27 | 0.80 | USD |
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1808 | BDR | 20C | orange/black | (48 mill) | 0.27 | - | 0.27 | 0.80 | USD |
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1805‑1808Er | Black omitted | 428 | - | - | - | USD |