Stamps › US › Smithsonian National Postal Museum — Bureau Plate Proofs › 10c Map of United States and Two Mail Planes plate proof
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StampSource · si-npm
10c Map of United States and Two Mail Planes plate proof
Smithsonian National Postal Museum — Bureau Plate Proofs · US · English
Catalog record
| Line | US |
|---|---|
| Set / series | Smithsonian National Postal Museum — Bureau Plate Proofs |
| Language | English |
| Kind | stamp |
| Place | United States of America |
| Scott | USA C7 |
| Medium | paper; ink (dark blue) / engraving |
| Region | us |
| Npm Record | npm_0.242263.3020 |
| Description | Certified plate proofs are the last printed proof of the plate before printing the stamps at the Bureau of Engraving and Printing. These plate proofs are each unique, with the approval signatures and date. For postal scholars these plates provide important production information in the plate margin inscriptions, including guidelines, plate numbers, and initials of the siderographer, or person who created the plate from a transfer roll. |
| Image Source | Smithsonian Open Access |
| Image License | CC0 |
| Oracle ID | 36593658 |
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Source credit: Smithsonian National Postal Museum