STEM Education 2018
Now showing: United States - Postage stamps - 2018 - STEM Education - 4 stamps.
2018
STEM Education
6. April WM: None Sheetsize: 20 Engraving: Lithographie Perforation: 10¾
![[STEM Education, type ]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/5628-b.jpg)
| No. | Type | D | Color | Description |
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| 5628 | IAB | FOREVER | multicoloured | (3750000) | 1.32 | - | 1.32 | - | USD |
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| 5629 | IAC | FOREVER | multicoloured | (3750000) | 1.32 | - | 1.32 | - | USD |
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| 5630 | IAD | FOREVER | multicoloured | (3750000) | 1.32 | - | 1.32 | - | USD |
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| 5631 | IAE | FOREVER | multicoloured | (3750000) | 1.32 | - | 1.32 | - | USD |
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| 5628‑5631 | Strip of 4 | 5.28 | - | 5.28 | - | USD | |||||||||||
| 5628‑5631 | 5.28 | - | 5.28 | - | USD |
