American Inventors 1983
Now showing: United States - Postage stamps - 1983 - American Inventors - 4 stamps.
1983
American Inventors
21. September WM: None Perforation: 11
![[American Inventors, type ]](https://www.stampworld.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 | 0.81 | USD |
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| 1806 | BDP | 20C | orange/black | (48 mill) | 0.27 | - | 0.27 | 0.81 | USD |
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| 1807 | BDQ | 20C | orange/black | (48 mill) | 0.27 | - | 0.27 | 0.81 | USD |
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| 1808 | BDR | 20C | orange/black | (48 mill) | 0.27 | - | 0.27 | 0.81 | USD |
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| 1805‑1808 | Block of 4 | 1.63 | - | 1.09 | 3.26 | USD | |||||||||||
| 1805‑1808 | 1.08 | - | 1.08 | 3.24 | USD |
