Stamps › US › Smithsonian National Postal Museum — Bureau Plate Proofs › 6c Leif Erikson plate proof
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StampSource · si-npm
6c Leif Erikson plate proof
Smithsonian National Postal Museum — Bureau Plate Proofs · US · English · 1968
Catalog record
| Line | US |
|---|---|
| Set / series | Smithsonian National Postal Museum — Bureau Plate Proofs |
| Language | English |
| Year | 1968 |
| Date | September 12, 1968 |
| Kind | stamp |
| Year | 1968 |
| Place | United States of America |
| Scott | USA 1359 |
| Medium | paper; ink (light gray brown, & black brown) / engraving |
| Region | us |
| Npm Record | npm_0.305037.69 |
| 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 | 36596855 |
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Source credit: Smithsonian National Postal Museum